I have an Nvidia Geforce GT 720 graphics card and I’ve been dual booting Windows 10 / Ubuntu 21.10 for the past couple of months. One thing I’ve noticed is that when I do any video encoding, for example using Avidemux or Handbrake, the performance of the card is much slower on Ubuntu than on Windows. Some comparisons on framerates here For Avidemux I took a mkv and a ts file, selected 'Nvidia H264' under video outp - Pastebin.com
I’ve tried changing drivers from recommended (470) to earlier drivers, and tried manually installing the 470 driver as well, but no change. The only setting I see that I’ve changed is in opengl settings where I change picture from ‘quality’ to ‘high performance’, but that doesn’t seem to help either. nvidia-smi shows no processes, either before, during, or after starting encoding.
While it’s an old card now, I’ve had no trouble at all with it on Windows and I was hoping that it would perform at about the same on Ubuntu. Is there a setting I’m missing? It seems to work otherwise, video playback seems normal, just video encoding is much slower. Thanks for any help!