if your frames have drastically decreased there are a few obvious things to test and a few that will be almost impossible with alaptop.

check your registry and make sure nothing has been installed on your PC from the time your frames were working good till now. Virus/spyware ect....( trojans are known to mess with your frames if they are streaming )

In some cases, i have seen video cards onlaptops continue working without a proporly functioning fan.... temps will rise and the performance of the card will diminish but still "work" . ( IE : your pc will still have video and post but the frames drop )



open the back of your macbook and make sure none of your fans have unseated during your travels.



update your drivers and byond that youw ill need to send it in for depo repair. X(