Yep, for a Reverb 2 and WMR, if you’ve not changed it then you’re good. It will be using the default WMR one.
Some MSFS VR settings tips here - My VR Settings & Tips
For a 3090 I would set in-game Render Scaling to 100 and then use the OpenXR Dev tool to just turn OFF the ‘Custom render scale’ setting, plus try it with reprojection set to always OFF, although some people like/hate that so a personal thing.
Nvidia drivers and VR seem a mess. I’m still rocking 457.30 but on a 2080, so not sure if it helps the 3XXX line so much. For me it works much better, not in pure fps but just in smoothness.
For the last update (actually since World Update 3 / UK) it seems like the ‘Terrain Level of Detail’ is killing things, so try that at 50 and if ok creep it up to 100 - there seems to be a performance issue with the photogrammetry for a lot of people.