Well, first of all, the Reverb G2 doesn’t use Steam VR. It uses OpenXR.
Here’s a good setup video:
There’s a billion posts and videos on optimizing the HP G2 for MSFS, easily Google-able and YouTube-searchable. Also look up the OpenXR Toolkit, a new tool that lets you optimize performance and quality.
Here’s the classic G2 performance/quality post: