Desktop brightness flickers when using more than 60Hz (100 to 144Hz) on Navi/Polaris
https://www.youtube.com/watch?v=lsRjdeeya0o&feature=youtu.be
Using Ubuntu 19.10 (5.4rc4 kernel), GNOME 3.34.1
This happens with Padoka stable PPA and even with Oibaf's Mesa-git drivers. Also my monitor reports 2560x1440@48Hz when I clearly set it to 144Hz. If I change it to 60Hz it'll detect it as that, and with no flickering.
In MATE D.E. I do not have this flickering issue at all. Maybe something to do with the compositor?