I use Debian (testing) for steam gaming with an AMD GPU. Works well. I use Debian for everything. Coincidentally it comes up at work a lot, there are a lot of Debian hosts in the world. Redhat servers aren’t unpopular, but when you have a lot of subscriptions you end up sending IBM a lot of cash.
But, any major distro can work. They are all running the same kernel after all, and mostly the same software too.
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