I use zerotier personally

I’ve ran basically your exact setup for years now with no issues have a mini pc with dual nic running opnsense a eap640( I think can’t remember off top my head ) and a tplink switch with minimal issues have to restart the ap once in a while and restart my mini pc but that’s due to a failing nic I’m pretty sure

I may be wrong here but the tp link issues were in the more consumer based hardware and not the eap and switch