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What is your audio interface? In many cases a computer is not the culprit, but a USB hub, cables, or an audio interface.
I’d first try with a different interface.
As for PC vs Mac, if you are willing to invest some time in troubleshooting, optimizing, and plan to use simple setups, you can use a PC.
If you don’t want to think that much about computers, want better routing options (everything is multi-client), and some other features (such as AVB) but at a higher cost, Mac is the way.
I use both, but I must say that a Mac provides you with really easy routing and generally, piece of mind.