I see. Graphics drivers were my second idea. They will mature. Another poster on here a while ago said that it took up to two years for a brand new AMD chips

I see. Graphics drivers were my second idea. They will mature. Another poster on here a while ago said that it took up to two years for a brand new AMD chipset to get fully supported on Linux. I remember that happening even to an old Intel Dell I had with docking station. (Looks like this kernel param is meant to solve my problem: amdgpu.sg_display=0 rather than the updated kernel.) Anyway if you can't get it stable, I'd call support to replace your motherboard perhaps. Shouldn't have to suffer with crashes.