Morgan Aero, Full HQ Grid, HQ Spa 2004, full grid (61 cars), 19:00, RealTime, 6 laps, skipped qualifying and practice sessions (one each). Seems to happen with every car though and with less AI as well. I'm on NVIDIA 1660Ti, I5 9400F, 16gb RAM. FPS is fine when it happens, I don't notice any noticeable drop. I tried setting graphics to both medium and full presets but it doesn't affect it. Pick 60hz and turn on V-Sync from either NVIDIA or GTR2 Config menu (I know it's advised not to but I play GTR2 on a controller so I don't need better ffb and I like having stable 60fps)