Okay, sorry for all the trouble. But thank you all for helping me.
It turns out I accidentally deleted a registry key and apparently without that my games slowed down. I thought it was only FeralHeart that was lagging because that's pretty much the only game I go on but then I noticed that my internet browser was acting slow, too.
I looked up some things to try to solve lagging and freezing problems and a PC Cleaner that I installed said that I deleted a registry key.
I restored my computer to when it had that and now my game is working normally and my computer is running smoothly.
Thank you all for the help. It was my mistake. Sorry.
