Since I have no idea if the problem is coming out from the game or rage plugin hook, I will suggest you to do the following something to check if the problem is coming out from the game or the other things.
1. Open GTA5 without using rage plugin hook. If this work, it means the problem isn't because of the game.
2. Restart the computer. (Might help, but most of the time didn't, but it is worth for a try)
3. Check whether there is any antivirus that you forgot to disable. Check it from the setting>apps (Sometimes some apps installed to your computer without asking you yes or no, so I suggest checking it)