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ztealmax
Posts: 94
Joined: Sat Aug 19, 2017 5:19 pm
Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Mon Oct 01, 2018 7:51 am

sorry m8 been chaos, ill set a reminder to myself to fix it when i get home tomorow at 18.30

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ztealmax
Posts: 94
Joined: Sat Aug 19, 2017 5:19 pm
Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Tue Oct 02, 2018 3:15 am

config.txt

Code: Select all

# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=82

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi

# Additional overlays and parameters are documented /boot/overlays/README

# Disabled onboard audio as im using a small usb audiocard for microphone and headset
dtparam=audio=off
# 32-bit screenmode
framebuffer_depth=32
framebuffer_ignore_alpha=1
# 192Mb GPU memory
gpu_mem=192
/etc/chromium-browser/customizations/00-piws-vars

Code: Select all

CHROMIUM_FLAGS="--disable-quic --enable-fast-unload --enable-checker-imaging --enable-tcp-fast-open --enable-native-gpu-memory-buffers --enable-gpu-rasterization --enable-zero-copy"
*still tweaking chromium-settings but it works for now

to check if its working
[url]chrome://gpu/[/url]

and a 1080p Trailer
https://www.youtube.com/watch?v=Z1BCujX3pw8

mattiasottosson
Posts: 5
Joined: Sat Apr 06, 2013 1:15 pm

Re: [HowTo!] Smooth youtube 1080p in Chromium

Tue Oct 02, 2018 11:03 am

Hm, unfortunately GPU acceleration dosen't seem to be activated:
Image

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ztealmax
Posts: 94
Joined: Sat Aug 19, 2017 5:19 pm
Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Tue Oct 02, 2018 11:05 am

hmm that looks weird should be workin, ill get back to you when i get home / Sincerlly Martin

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ztealmax
Posts: 94
Joined: Sat Aug 19, 2017 5:19 pm
Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Tue Oct 02, 2018 11:09 am

message me on facebook if u want and ill try and sort it out

martin.svensson@ztealmax.se

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ztealmax
Posts: 94
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Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Fri Oct 12, 2018 9:44 pm

Use this for full hardware acceleration in chromium-browser and speed up browsing with some tweak as you see in code field:

Code: Select all

chromium-browser --ignore-gpu-blacklist --enable-gpu-rasterization --enable-native-gpu-memory-buffers --enable-checker-imaging --disable-quic --enable-tcp-fast-open --disable-gpu-compositing --enable-fast-unload --enable-experimental-canvas-features --enable-scroll-prediction --enable-simple-cache-backend --answers-in-suggest --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so --ppapi-flash-args=enable_stagevideo_auto=0 --ppapi-flash-version= --max-tiles-for-interest-area=512 --num-raster-threads=4 --default-tile-height=512
copy everything except chromium-browser to your 00-pi-wars or 00-piws-vars

grandcanyon
Posts: 4
Joined: Sun Oct 14, 2018 11:14 pm

Re: [HowTo!] Smooth youtube 1080p in Chromium

Sun Oct 14, 2018 11:37 pm

ztealmax wrote:
Fri Oct 12, 2018 9:44 pm
Use this for full hardware acceleration in chromium-browser and speed up browsing with some tweak as you see in code field:

Code: Select all

chromium-browser --ignore-gpu-blacklist --enable-gpu-rasterization --enable-native-gpu-memory-buffers --enable-checker-imaging --disable-quic --enable-tcp-fast-open --disable-gpu-compositing --enable-fast-unload --enable-experimental-canvas-features --enable-scroll-prediction --enable-simple-cache-backend --answers-in-suggest --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so --ppapi-flash-args=enable_stagevideo_auto=0 --ppapi-flash-version= --max-tiles-for-interest-area=512 --num-raster-threads=4 --default-tile-height=512
copy everything except chromium-browser to your 00-pi-wars or 00-piws-vars
I'm able to view 1080p graphics on my raspberry pi 3+ just as long as I don't go to fullscreen mode. When I goto full screen mode, I get buffering and pause issues. I'm not sure how to solve it. I used the command line above to start chrome and below is my chrome://gpu. I have also changed the memory splits to 192MB. I can get youtube working by using the omxplayergui but this seems only to work on videos that are saved and it only works on youtube at least that is what I have tried.

Also, I do not understand the GL Drivers. I have tried both the fake and the full and when I try to view video through chromium I always get an Aw snap crash. I then just go back to legacy.

Can someone give me any pointers?

Code: Select all

Graphics Feature Status
Canvas: Hardware accelerated
CheckerImaging: Force enabled
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Software only. Hardware acceleration disabled
Multiple Raster Threads: Force enabled
Native GpuMemoryBuffers: Hardware accelerated
Rasterization: Hardware accelerated
Video Decode: Hardware accelerated
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
Driver Bug Workarounds
clear_uniforms_before_first_program_use
count_all_in_varyings_packing
decode_encode_srgb_for_generatemipmap
disable_framebuffer_cmaa
disable_post_sub_buffers_for_onscreen_surfaces
scalarize_vec_and_mat_constructor_args
Problems Detected
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Mesa drivers in Linux handle varyings without static use incorrectly: 333885
Applied Workarounds: count_all_in_varyings_packing
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
Use GL_INTEL_framebuffer_CMAA on ChromeOS: 535198
Applied Workarounds: disable_framebuffer_cmaa
Disable partial swaps on Mesa drivers (detected with GL_VERSION): 339493
Applied Workarounds: disable_post_sub_buffers_for_onscreen_surfaces
Decode and encode before generateMipmap for srgb format textures on os except macosx: 634519
Applied Workarounds: decode_encode_srgb_for_generatemipmap
Disable KHR_blend_equation_advanced until cc shaders are updated: 661715
Applied Workarounds: disable(GL_KHR_blend_equation_advanced), disable(GL_KHR_blend_equation_advanced_coherent)
Don't expose disjoint_timer_query extensions to WebGL: 808744
Gpu compositing has been disabled, either via blacklist, about:flags or the command line. The browser will fall back to software compositing and hardware acceleration will be unavailable.
Disabled Features: gpu_compositing
Version Information
Data exported	2018-10-14T23:21:34.702Z
Chrome version	Chrome/65.0.3325.181
Operating system	Linux 4.14.71-v7+

Command Line	/usr/lib/chromium-browser/chromium-browser --enable-pinch --ignore-gpu-blacklist --enable-gpu-rasterization --enable-native-gpu-memory-buffers --enable-checker-imaging --disable-quic --enable-tcp-fast-open --disable-gpu-compositing --enable-fast-unload --enable-experimental-canvas-features --enable-scroll-prediction --enable-simple-cache-backend --answers-in-suggest --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so --ppapi-flash-args=enable_stagevideo_auto=0 --ppapi-flash-version --max-tiles-for-interest-area=512 --num-raster-threads=4 --default-tile-height=512 --flag-switches-begin --flag-switches-end
Driver Information
Initialization time	1087
In-process GPU	false
Passthrough Command Decoder	false
Direct Composition	false
Supports overlays	false
Sandboxed	false
GPU0	VENDOR = 0x0000, DEVICE= 0x0000 *ACTIVE*
Optimus	false
Optimus	false
AMD switchable	false
Driver vendor	Mesa
Driver version	13.0.6
Driver date	
Pixel shader version	1.30
Vertex shader version	1.30
Max. MSAA samples	0
Machine model name	

cjan
Posts: 712
Joined: Sun May 06, 2012 12:00 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Sun Oct 28, 2018 12:54 am

vc4 driver, almost all h/w enable.

Code: Select all

Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Hardware accelerated
Out-of-process Rasterization: Disabled
Hardware Protected Video Decode: Hardware accelerated
Rasterization: Hardware accelerated
Skia Deferred Display List: Disabled
Skia Renderer: Disabled
Surface Synchronization: Enabled
Video Decode: Hardware accelerated
Viz Service Display Compositor: Enabled
WebGL: Hardware accelerated
WebGL2: Hardware accelerated

grandcanyon
Posts: 4
Joined: Sun Oct 14, 2018 11:14 pm

Re: [HowTo!] Smooth youtube 1080p in Chromium

Sun Oct 28, 2018 1:12 am

cjan wrote:
Sun Oct 28, 2018 12:54 am
vc4 driver, almost all h/w enable.

Code: Select all

Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Enabled
Native GpuMemoryBuffers: Hardware accelerated
Out-of-process Rasterization: Disabled
Hardware Protected Video Decode: Hardware accelerated
Rasterization: Hardware accelerated
Skia Deferred Display List: Disabled
Skia Renderer: Disabled
Surface Synchronization: Enabled
Video Decode: Hardware accelerated
Viz Service Display Compositor: Enabled
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
I take it you compiled the mesa drivers to get the vc4 drivers?

https://github.com/anholt/mesa/wiki/Bui ... sa-for-VC4

cjan
Posts: 712
Joined: Sun May 06, 2012 12:00 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Sun Oct 28, 2018 11:45 pm

1. use software (CPU) rendering with the zero copy for CJK-fonts or Arabic on web site.
2. use hardware (GPU) rendering with the one copy for animations and transition effects on web site.

cjan
Posts: 712
Joined: Sun May 06, 2012 12:00 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Mon Oct 29, 2018 1:07 am

grandcanyon wrote:
Sun Oct 14, 2018 11:37 pm
Also, I do not understand the GL Drivers. I have tried both the fake and the full and when I try to view video through chromium I always get an Aw snap crash. I then just go back to legacy.

Can someone give me any pointers?
what i setup is while enable vc4 driver,
1. enable H/W in chromium setting
2. del OP's --disable-gpu-compositing

swb90
Posts: 1
Joined: Fri Nov 02, 2018 5:13 pm

Re: [HowTo!] Smooth youtube 1080p in Chromium

Fri Nov 02, 2018 5:16 pm

hi cjan

did you have to compile vc4 on your own?
i am able to switch to vc4-kms-v3d via raspi-config
does that mean i do not have to recompile?

also, could you clarify on the following?
1. use software (CPU) rendering with the zero copy for CJK-fonts or Arabic on web site.
2. use hardware (GPU) rendering with the one copy for animations and transition effects on web site.
how do you do this?

thank you

ajizzo
Posts: 1
Joined: Sun Nov 04, 2018 4:59 pm

Re: [HowTo!] Smooth youtube 1080p in Chromium

Sun Nov 04, 2018 5:01 pm

ztealmax wrote:
Fri Jul 27, 2018 9:18 am
ztealmax wrote:
Fri Jul 20, 2018 5:30 pm
fjleon wrote:
Tue Jul 03, 2018 2:45 pm
i don't really care about 1080p but i appreciate the offer. what i am curious to see is a screenshot of your chrome://gpu and maybe your whole config.txt and what chromium version are you using.
Sorry havent been on much, will post it later today :)

Sorry have been working to much, ill fix it this weekend and put up an downloadable image so you can test it with out doing mods to your own.

//Martin
Yes please post a link to the full dmg working dmg/image file! Thanks!

Nkirk
Posts: 1
Joined: Thu Jan 17, 2019 3:18 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Thu Jan 17, 2019 3:25 am

Hi guys

I registered to say that this really works.

No success with vc4 drivers. Works with rpi update and gles. Its skicky worthy, due to this I'm able to use rpi3 in living room for casual YouTube viewing.

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ztealmax
Posts: 94
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Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Sat Jan 19, 2019 9:15 pm

Sorry all havent been online for quite a time, if anyone still needs an image let me know // Martin

trigun75
Posts: 5
Joined: Thu Jan 31, 2019 10:22 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Thu Jan 31, 2019 10:33 am

It didn't work for me

there is something missing in this howto

1080p looks choopy at full screen , Framerate is low

same "sources streams" play fine , smooth using omxplayer , mpv , vlc

I guess , you should write a howto from a "clean" install , and maybe add a youtube video showing the smooth playback

I tried all , changing cmdline.txt and config.txt

with vc4-kms , vc4-tkms , with gpu_mem set as 192 and even 256 , no luck

chrome://gpu shows everything as hardware accelerated , but still , slow framerate

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ztealmax
Posts: 94
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Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Thu Jan 31, 2019 12:44 pm

Will check again when i get Home and update post
Yes vill repost guide with a youtube :) / Martin

xsmax
Posts: 4
Joined: Mon Mar 04, 2019 1:47 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Mon Mar 04, 2019 2:10 am

any update on the state of this ? on latest stretch version regardless of flags set I see my video_decode via media-internal url flip flop between mmal and ffmpeg ? that means when the html5 video plays through mmal its ok although I some frames do drop and on ffmpeg its way too choppy..

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ztealmax
Posts: 94
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Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Mon Mar 04, 2019 9:25 am

Update is a New tutorial with install script Will be posted on Saturday :-)

Yeahthisisausername
Posts: 14
Joined: Tue Jan 01, 2019 3:04 am
Location: Norway

Re: [HowTo!] Smooth youtube 1080p in Chromium

Thu Mar 07, 2019 8:28 am

Increasing vRAM to either 192 or 256 MB, and increasing Swap (100 -> 1024 MB+), and using an SSD instead of the a MicroSD, makes a huge difference in performance. Still, YouTube is just so badly optimized for weak hardware, that it's laughable. Chromium will play 1080p and even 60p YouTube on my Pi, but that's before I go fullscreen. At that point, even 720p will be quite the stutter fest (depending on video). Not having HW accelerated video decoding is such a letdown, especially on suck weak hardware. It would probably not be that noticeable on hardware with a beefy GPU/CPU, but that's not the case here, now is it.

Also, yes, I'm well aware of the workarounds, but I'd like to have a great out-of-the-box experience, without using 500 packages with hacks and tweaking.

m33ts4k0z
Posts: 1
Joined: Sat Mar 16, 2019 12:39 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Sat Mar 16, 2019 1:34 am

Ok guys since there is a lot of information in this topic and I will be soon start hitting my head against the wall since I spent the whole day trying to fix this, I will make an attempt to sum up everything with this first post of mine because I also finally made it!

I will get into details soon but first, because I read a lot of "it works" but I see no proof, I made a small video with my mobile that you can see. 1080p works flawlessly in and out of full screen:

https://drive.google.com/file/d/1W8aMFh ... p=drivesdk

Since we got that out of the way, lets get into it:

So the software:

Raspbian Stretch with desktop November 13 2018 release
Commands issued:

sudo apt update
sudo apt upgrade
sudo rpi-update

Changed the swap file to 2GB instead of 100MB:

sudo nano /etc/dphys-swapfile
CONF_SWAPSIZE=2048
sudo /etc/init.d/dphys-swapfile stop
sudo /etc/init.d/dphys-swapfile start

video memory is at 256MB

vc4 disabled. No vc4 option worked for me so GLES is active and the performance is better by miles.

config.txt:

Code: Select all

# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
hdmi_group=2
hdmi_mode=82

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable the lirc-rpi module
#dtoverlay=lirc-rpi

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=on
gpu_mem=256
#dtoverlay=vc4-fkms-v3d,cma-256
start_x=1
About the startup parameters of chromium, I edited another file.

sudo nano /etc/chromium-browser/default:

Code: Select all

# Default settings for chromium-browser. This file is sourced by /bin/sh from
# /usr/bin/chromium-browser

# Options to pass to chromium-browser
CHROMIUM_FLAGS="--ignore-gpu-blacklist --enable-gpu-rasterization --enable-native-gpu-memory-buffers --enable-checker-imaging --disable-quic --enable-tcp-fast-open --disable-gpu-compositing --enable-fast-unload --enable-experimental-canvas-features --enable-scroll-prediction --enable-simple-cache-backend --answers-in-suggest --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so --ppapi-flash-args=enable_stage_stagevideo_auto=0 --ppapi-flash-version= --max-tiles-for-interest-area=512 --num-raster-threads=4 --default-tile-height=512"
chrome://gpu:

Code: Select all

Graphics Feature Status
Canvas: Hardware accelerated
CheckerImaging: Force enabled
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Software only. Hardware acceleration disabled
Multiple Raster Threads: Force enabled
Native GpuMemoryBuffers: Hardware accelerated
Rasterization: Hardware accelerated
Video Decode: Hardware accelerated
WebGL: Hardware accelerated
WebGL2: Hardware accelerated
CPU usage was about 20%-60% as you can also see in the video so I suppose that some kind of HW acceleration was indeed in play.

Let me know if I missed something

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ztealmax
Posts: 94
Joined: Sat Aug 19, 2017 5:19 pm
Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Mon Mar 18, 2019 9:34 am

@m33ts4k0z nice work, havent been online for quite a while doing to work and i really felt bad not completing the tutorial
but to be honest i tried my script again installing from scratch and it does work for me, i will try your way to see if i get any different results

Thanx m33ts4k0z


*Together we build a better (pi)future ;)

xsmax
Posts: 4
Joined: Mon Mar 04, 2019 1:47 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Thu Mar 21, 2019 7:31 am

Thankyou m33ts4k0z! your instructions dated "Sat Mar 16, 2019 1:34 am" worked and I have had smooth 1080 playback except for this issue, and I wonder if any one can re-produce it.

Using vimeo I have one video always play choppy (frame drops) and another always play smooth (no frame drops)

I think I have discovered that one is using the GPU and the other the CPU

Video 1
https://vimeo.com/channels/staffpicks/324927780

open chrome://media-internals
video decode : FFmpegVideoDecoder (CPU?)

Video 2
https://vimeo.com/304629397

open chrome://media-internals
video_decode : MmalVideoDecoder (GPU?)

maybe this is the wrong place to post but I though maybe some one here could test and see if they also get the same results? Any guidance is appreciated. Thankyou

also posted a bug report on the chromium bug site

Image

trigun75
Posts: 5
Joined: Thu Jan 31, 2019 10:22 am

Re: [HowTo!] Smooth youtube 1080p in Chromium

Thu Mar 21, 2019 9:26 am

xsmax

that is not a bug at all

you are watching 2 different video codecs

the 1st link is a 4K video (hevc)
the 2nd link is a 1080p video (h264)

HEVC is only decoded using software (ffmpeg) , since hardware doesn't support hevc
H264 is decoded using hardware (mmal)

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ztealmax
Posts: 94
Joined: Sat Aug 19, 2017 5:19 pm
Contact: Website

Re: [HowTo!] Smooth youtube 1080p in Chromium

Fri Mar 22, 2019 3:35 pm

Updated to get even smoother working web browser, but just trying atm but give it a go and let me know how it goes: just paste it and replace
what allready in the config file:

Code: Select all

CHROMIUM_FLAGS="${CHROMIUM_FLAGS} --purge-memory-button --smooth-scrolling --no-pings --disable-background-mode --dns-prefetch-disable --ignore-gpu-blacklist --enable-gpu-rasterization --enable-native-gpu-memory-buffers --enable-lazy-image-loading --enable-lazy-frame-loading --enable-checker-imaging --enable-quic --enable-resource-prefetch --enable-tcp-fast-open --disable-gpu-compositing --enable-fast-unload --enable-experimental-canvas-features --enable-scroll-prediction --enable-scroll-anchoring --enable-tab-audio-muting --disable-background-video-track --enable-simple-cache-backend --answers-in-suggest --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so --ppapi-flash-args=enable_stage_stagevideo_auto=0 --ppapi-flash-version= --max-tiles-for-interest-area=512 --num-raster-threads=4 --default-tile-height=512"
If you wish to test without altering file run from terminal:

Code: Select all

chromium-browser --purge-memory-button --smooth-scrolling --no-pings --disable-background-mode --dns-prefetch-disable --ignore-gpu-blacklist --enable-gpu-rasterization --enable-native-gpu-memory-buffers --enable-lazy-image-loading --enable-lazy-frame-loading --enable-checker-imaging --enable-quic --enable-resource-prefetch --enable-tcp-fast-open --disable-gpu-compositing --enable-fast-unload --enable-experimental-canvas-features --enable-scroll-prediction --enable-scroll-anchoring --enable-tab-audio-muting --disable-background-video-track --enable-simple-cache-backend --answers-in-suggest --ppapi-flash-path=/usr/lib/chromium-browser/libpepflashplayer.so --ppapi-flash-args=enable_stage_stagevideo_auto=0 --ppapi-flash-version= --max-tiles-for-interest-area=512 --num-raster-threads=4 --default-tile-height=512
[/b]

Only thing im not sure of atm is --enable-resource-prefetch have to test if it makes any different enabled or disabled

// ztealmax

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