The difference is geforce experience. Same driver, both using clean install. I can’t say anyone else is effected by this in particular. But in my case it’s repeatable and consistent. The only way I update drivers is by downloaded files, if I use geforce experience I will be at 10fps the next time I start msfs (three times), or the second one after that (once). Four times total. You folks can believe what you want. I believe my own eyes and reasonably methodical testing. If I go back to 10fps after a manual driver install I’ll let you know, but haven’t had that happen once so far.