Until the 1.6 update i would get 100+ fps when playing minecraft single player or on a server, but now it starts off getting around 40 fps and slowly drops to 15-20. I changed my render distance to normal and that fixed it for about a minuet but then it went back down, i continued to drop my settings until they couldn't go any lower and every time i changed a setting it would fix the fps issue temporarily but it would always go back to lower.
My laptop has a quad-core i5 processor and 6gb ram with the hd 4000 graphics and win 8.
If anyone knows how to fix this please let me know. I would like to know if im the only one with this problem.