Seems Stadia + Google Chrome on Linux leads in input lag turning the experience unplayable.
Tested on vanilla install of chrome (stable 78.03904.108, beta 79.0.3945.45, dev 80.0.3970.5) and all those are affected.
All of those present hardware accelerated as unavailable feature, and this should be the cause of the problem.
Any idea to get rid of the issue?
YES !!! IT WORKS !!!
I was having some issues running stadia in "Best visual quality" a lot of lag and frame drops, (running stadia with "limited data usage" work flawless btw)
Just using chromium with those flags ( --ignore-gpu-blacklist --disable-gpu-vsync) did the trick for me, thanks a lot man.
Does anybody know the codec Google is using? VP9? The nVidia driver of my GTX 770 tells me in VDPAU info, that it is only capable of MPEG1, MPEG2, H264, VC1, MPEG4, DIVX4 and DIVX5.
Chrome on Linux does not support GPU acceleration yet unfortunately. I'd advise against using that Chromium with VAAPI enabled, it's a very old version with tons of security issues.