I compared the old preset (1920*1080; 24-25-30fps) with the new one you proposed. I've Ryzen 3700X and 32 GB RAM. Old preset: ** rendered 1043 frames in 50.496 secs, 20.655 fps, size 6.6 MiB (CPU 20 - 23%) New preset with b=0 and row-mt=1: ** rendered 1043 frames in 64.259 secs, 16.231 fps, size 19.4 (CPU 50 - 70%) The difference in fps, despite the increased CPU usage, I think is explained by the higher quality achieved with your preset. The "threads=..." option should be used in conjunction with "token-parts=3," but I don't see much difference in results. The option "tile-columns=..." should be used in conjunction with "frame-parallel=1," but again I don't notice any difference... In my tests I find no difference using "Use HW device" in "none"; "vaapi" or "vdpau", I think it would take special presets. In general I find VP9 slow, heavy and not efficient on my CinGG (I have not tried ffmpeg from command line due to lack of time).