If the NPCs, etc. feel too small you likely have a wrong IPD value set. IPD describes the distance between your eyes. Since most headsets provide that value based on...

Forget any kind of setups that tell you to set sys.OpenXR = 42 or stuff like that. Remove those entries entirely from your user.cfg. Plug in your link cable, confirm...

Small addition to this since I just started using my old Reverb G2 on my private PC. In SteamVR make sure to set the per eye setting to 100% and disable motion...