https://bugs.freedesktop.org/show_bug.cgi?id=106175
--- Comment #25 from tempel.julian@gmail.com --- It doesn't seem to be related to a certain GCN generation, as there are exactly matching reports of at least Hawaii, Polaris 10/11 and Vega 10 (probably also Fiji).
It probably neither is related to the type of display output, as I am using DL-DVI and grmat afaik uses Display Port. And I suppose we all tried standard refreshrate of 60Hz without success.
So, unfortunately, I am rather clueless.
But I just noticed we haven't yet followed David's idea of setting a low "standard" mouse polling rate of 125Hz. I currently don't have my Radeon installed, so I can't give this a quick try (but can do so in the future).
Does anybody have this issue with a native resolution of 1920x1080 60Hz? I haven't tested such a display yet.