MY frames are horrible with the new launcher. (plz read summary of bug for more info)

the issue that i am having is that the new minecraft launcher has made my frames drop to about 12 from 100. I know it is the launcher since i had downloaded the old minecraft launcher and it ran fine. then in the new launcher 1.6.2 and 1.6.1the frames were horrible. So i changed the launcher version to 1.5.2 and I still had major frame issues. Even though 1.5.2 in the old launcher was fine and ran fairly good with abot 100 fps. So pz help me out