https://bugs.freedesktop.org/show_bug.cgi?id=106175
--- Comment #104 from Michel Dänzer michel@daenzer.net --- (In reply to Hans D from comment #103)
With the latest xf86 DDX driver 3d works better in amdgpu.dc=0, but still lags, even though a built-in counter is showing high fps. Does amdgpu.dc=1 improve 3d performance that much?
It shouldn't affect 3D performance directly at at all. I'm not sure what exactly you mean by "lags", so it's hard to guess what's going on.