55 hours into the game and now it started freezing on start-ups. I had no problems playing since launch, all the way until last night. But today, when I tried to open it, it started freezing. Sometimes at the copyright notice ("Continue" freeze), sometimes at the load game screen with the leaderhead info. Tried over ten times by now and can't get into the game. I did notice that some time during the past weekend, NVidia GeForce Experience silently applied "optimizations" to my settings. I only noticed it because the game became full screen instead of borderless windowed full screen. Perhaps NVidia messed something up? I also found that the Log folder contains a GameEffects.log that is 7MB already...don't know if related.