I use system monitor from KDE. I tried loading into CinGG an 8k video; 60 fps; AV1 (supported by vaapi) and mkv. I ran the playback, but I do not detect GPU utilization. The GPU load varies from 0 to 10%, but these are normal variations that are repeated even with GPU at rest. The CPU has a load of about 30%. With the appimage I have: GPU = Same values. CPU = about 60%. Confirmation is the terminal message: "Decoder libdav1d does not support device type vaapi." I also tried vdpau (which for AMD GPU is a wrapper that leads to vaapi) and the result is the same: "Decoder libdav1d does not support device type vdpau." I tried a second video: 4k; 60 fps; HEVC; mp4. The video does not load and I have numerous errors like: "file: /home/paz/video_editing/free_video/Life Untouched 4K Demo.mp4 int FFVideoConvert::convert_picture_vframe(VFrame*, AVFrame*, AVFrame*): Error retrieving data from GPU to CPU" With appimage I have no loading errors, but still the GPU is not engaged: "file:/home/paz/video_editing/free_video/Life Untouched 4K Demo.mp4 err: Operation not permitted Failed HW device create. dev:vaapi err: Input/output error HW device init failed, using SW decode." Finally using mpv from the command line (set to vaapi): $ mpv 'Life Untouched 4K Demo.mp4' GPU = 30-60% CPU = 0-2%