For EQ at least a direct connection is the only way sadly (with multiplicity). I was using wifi right next to the damn router with a solid signal and the mouse/kb would just nope the fuck out all the time.
Bandai Namco sale on steam seems legit. Check it out if you're in the need of a jrpg fix. PIcked up Tales of Vesp definitive and Ni No Kuni remastered.