AMD's open source driver is fully usable for normal usage (including gaming), and in general more performant than the closed source version.
https://www.phoronix.com/scan.php?page=article&item=rx590-li...
https://www.phoronix.com/scan.php?page=article&item=rx590-li...
Last I heard, people were installing Linux to use the AMD OpenGL drivers to play emulators (it might have been Cemu, actually ran trough wine).
[1]: XDC2019 slide deck https://xdc2019.x.org/event/5/contributions/334/attachments/...