Minecraft rendering system lag{NEED HELP NOW}

So when I got my new laptop, a few months ago, I installed minecraft, I played it, and minecraft ran at 50 fps, but, when I moved, I lowed to 10. A few weeks later I got gmod (and tf2). They ran like heaven. I then hared that minecraft rendering system changed. Then I got this idea. I went back to minecraft (which was like 3 weeks since I been on it). I went to version 1.7.10 and it ran at 50 fps no more no less.

Why would this be?