https://bugs.freedesktop.org/show_bug.cgi?id=102646
--- Comment #108 from tempel.julian@gmail.com --- I suppose also the Windows driver enforces maximum VRAM clock in your case all the time? If that is true, it would definitely be a cool thing if we could get a patch into upstream to cover that as well (Ahzo's patch landed in amd-staging-drm-next branch).