A year or two ago my performance was always good, even with my old system (Ryzen 1600X, 16 GB, GTX 1070, Oculus Rift CV1). iRacing has built-in settings for VR headsets so that there is no need for you to do any FOV calculations. I would follow the optimisation guide and see what kind of performance you get on a known good performance track (like Okayama) and then be prepared to drop the settings down for troublesome tracks. Suddenly, iRacing is a more palatable prospect for people like me, who cut their teeth on GTR 2 rather than the go-kart track. Instead of the 'bus driver' position common to most other simulator chassis on the market, Ricmotech has taken careful measurements of real-world race cars and developed a sleek design while staying true to reality.
