[PC] FPS drops in the same places, on any graphics settings.

Hello, maybe you can help me?
At the highest graphics settings, at the lowest, at locked frames at 60, at locked frames at 30, I have sudden drops of 5-7 fps. Always in the same places on the track. Frame and graphics settings do not affect this at all. I have the game installed on SSD. Latest Nvidia drivers, up-to-date Windows. Forza Horizon 4 works like a dream on the highest settings, and here Motorsport 7 does not work well at any settings …

Do you have any idea? It’s impossible to play if you suddenly drop 5 frames in a corner and it doesn’t matter if you have 30 or 60 frames.