I installed Raspiraw on my RPI 3B+ and experienced some problems with high-speed video capture:
1. No matter what resolution and FPS I set in ./raspiraw command, FPS never exceeds 243 (randomly fluctuates between 235-242), with values lower than 243 setting is fine. Note: I check for fps both via frames recorded in timestamp file and "ls -l /dev/shm/out.*.raw | wc --lines" command.
2. Captured frames are either pitch black or a seemingly random amalgamation of colored pixels even after conversion (raw>ppm>png).
3. All recording executables in "tools" section such as "640x480" and similar don't run properly, displaying errors that /dev/shm/out.*.raw and timestamp file were not found.
What is possible reason for those problems?