So yeah, I already installed all the required drivers and stuff and even DOOM (GzDoom) lags and stutters. All the games I have on the other HDD are games I used to be able to run perfectly or at least enough to be playable. I changed my main HDD to one with a smaller capacity but I doubt that is the problem here. I am running an i5 with a 4gb RAM stick. I am truly desperate and I need guidance.