I think a lot of the issues you've brought up regarding AMD CPUs are no longer relevant with Zen 3. Inter-core communication latency has been much improved wit

I think a lot of the issues you've brought up regarding AMD CPUs are no longer relevant with Zen 3. Inter-core communication latency has been much improved with the larger caches and architecture improvements in Zen 3. Single threaded performance has always been within a stone's throw of Intel CPUs with Zen and Zen 2 and now the gap isn't even worth talking about with Zen 3 since you get more cores for less money. I'm not sure about the Linux story, but this is the first I've heard of issues with Zen on Linux.