AMD GPU support in linux is a bit of a flip flop. Some generations seem to get a lot of love and work really damn well (sometimes with better and broader support than the windows drivers) like RDNA2 and most Polaris cards. Others such as Vega and specially now RDNA3 are a shitshow with a lot of things just broken.
I used a Vega64 for years and just bought a 6000 series. Both work great on my machines. I'm typically running the bleeding edge kernels though, so that might explain it a bit. I would think Ubuntu is probably the most supported if you opt for the OEM kernel.
I ran vega 64 in linux for 3-4 years, it was really nice. It also worked without bugs with proton, the 3060 I have now gives me a lot of artifacts like incorrect lightning and even X crashes once in a while.
I'm considering switching back to an AMD card due to this.
