This problem has been ongoing for 5-6 months, meaning it's been present since the game's release. I don't think it's related to updating the GPU to an older version, and updating to an update from 6-7 months ago doesn't make sense either. Thousands of GPU updates, even after the game's own updates, haven't solved the problem. It occurs after cutscenes in the game. I spent almost 2-3 hours in SBC missions without any issues, but when I enter the game, after the second half or sometimes right at the start, I encounter a 5-10 fps problem.