I need help badly on how can I solve my problem.
The game slows from 70 fps to 14 fps frequently during game for about 30 seconds, then after 30 seconds it will go back to 70 fps but then the problem occurs until the end of the game.
I've encountered this glitch since 2k10 but then It happened again nowadays every time I play 2k11.
Please somebody help me.

Thanks