Sudden Lag on Zelda:OOT

[ExxKun]

Hello , I hope anyone can help me here , I would be really grateful if someone could help me with this frustration I have. I have been playing Ocarina Of Time for a few months and its been perfect , no lag or anything even while streaming.
But suddenly its started to drop a few frames because the VI/s have gone from 57-58 to 57-54 , and it lags from place to place.

I am using the latest version of PJ64 and I am also using the Glide64 Napalm May 2011 version because Glide64's Final version had a color issue. And I run the emulation on a compatability mode for Windows Vista SP2 and run as adminstrator. Also I set the process of PJ64 priority to be above normal from task manager.

Here are my specs also :
Processor - AMD A10-6800K APU with Radeon (tm) graphics
RAM: 8GB

Any help is appreciated