https://bugs.freedesktop.org/show_bug.cgi?id=110659

--- Comment #29 from tempel.julian@gmail.com --- The patches by Nicholas are now merged in drm-next-5.4 branch (tested with recent commit that bases the branch on 5.3-rc3), but the mouse input issue in certain games is still unaffected.

I was also able to reproduce it with a different system (also with RX 580) which features a 60Hz FreeSync display, it definitely makes FreeSync impossible to use in the aforementioned titles.