What did I do ? severe lag

RacerXXX455, on Feb 28 2017 - 16:19, said: My game was running just fine until I got a game message saying "you need to lower graphics for better quality" or something like that. Like a dummy I did it. What I got was severe lag first noticeable on garage main screen. My mouse curser is slow and jumpy and way way behind. I tried playing a game and it was waste of time. Severe lag and graphics went to hell. I uninstalled game then reinstalled it and still the same thing. Please tell me what I did wrong !! I only use a laptop with windows 7 but it was really working just fine for me. I love this game and I'm starting to get worried. Thanks for help