I don't use Ryzen myself, but many on these forums do with no problems. Ryzen processors at the moment seem to offer much better value for money.

How well it a processor runs Poser is more a matter of how many cores and what is the clock frequency rather than the manufacturer. One thing to take into account is that laptops usually use lower power components than desktops and it's often just the letter at the end of the name that differentiates them, and you don't normally get the same "bang for your buck" with a laptop, which can also suffer from more thermal throttling (slowing down when the temperature in the case gets hot) than a desktop