>>375838361
I've never used Oculess, but as far as I know, it's still your only option right now for using a Quest 2 with no Facebook account.
If by V2 you mean the G2, the problem is still the tracking, which is usable, but supposedly worse than a Rift S. I wouldn't recommend WMR tracking for VRFPS if you have other options though. The AMD problems I'd heard about were just some anon with a 6900XT and G2 complaining about low framerates in some games, I remember him popping up a couple times to complain about it, but might've just been something else weird with his build.
Third party controllers would mean using ones meant for some other headset, and for now, your only option is to get lighthouses and use Vive/Index controllers, which on top of a G2 is going to get you closer to Index prices.