Minecraft Forums

I have done plenty of research and couldn't find a single solution to this problem. Anyhow, here's the problem. 2 days ago, I decided to end my day with a little minecraft. But i noticed something.. strange about my game. The fps was rapidly changing between 80-40 fps. Somewhat choppy. I know, with that amount of fps i shouldn't be complaining but it's rather disappointing considering the fact i would run at pretty solid 150 fps before and stayed like that until that day. It almost seems as if the computer is using the built in Intel graphics rather than my actual graphics card (radeon HD 7790), but if so, why and is there a solution for it?