rexzer wrote It could be something as simple as reallocating ram. When I used to play mc I had all my ram going to everything but mc so I was only getting like 25 frames. When I adjusted it, it was fixed instantly and I had the regular 150 frames without optifine. With optifine I was near 500

How do you adjust it i am not familiar with pc gaming, I am new to it.

Are you using the recommended settings from GeForce experience? If not try doing that, or try turning some settings down. If you have loads of programs running in the background try closing some of them. Are your graphics drivers up to date?
There are so many different possibilities it's hard to give a specific reason.