I've been playing fallout 4 a lot since it came out. I love the game, but i have a problem. While I'm in buildings or near large buildings I get LARGE and noticeable frame drops. Sometimes I will go frop 60 FPS to 45, then to 30, then to 25. It is almost unbearable at times. With the specs I have in my computer I should have NO problem what so ever running Fallout 4 on Ultra settings, which I do. I have also tried it on ALL other settings and that has not solved the problem. I have an intel core-i7 6700k, EVGA Hybrid GTX 980Ti, 16Gb of DDR4 Memory. Before you suggest this like everyone does, i HAVE ALREADY CHECKED MY DRIVERS. I have uninstalled and installed my drivers and they are up to date. Some things i have seen online is someone said that since they had the download-pre-launch and got the first day patch, instead of downloading the whole thing at one time. So since I had the encrypted version and then downloaded the patch that fixed it on launch, i have read that that mya have corrupted the game. Is this true? if so and i reinstall the game, can i keep my save without my save being corrupted?