So far with Ryzens we have had zero problems with CPU. We run out of every other resource first, and we haven't had to enforce a single CPU restriction that I can recall. However, specials generally have 33% average (24/7) and 100% burst per core for "officially" 5 minutes and "unofficially" a few hours. Regular plans have 50% average (24/7) and there's no code right now planned on separating specials from regular plans on Ryzen. However, this isn't a guarantee.