cpu overload not sure why

[skwad]

ok i was recording a song today, nothing major, about 7 tracks of drums running through a stereo bus with one compression plug in, two tracks of guitars through a stereo bus with an eq plug in, about 6-7 vocals running through a bus a little reverb and compression and a master fader with compression and maxim. all of a sudden my cpu usage shot up from under 50% to 99% and i kept getting the cpu overload message. if i close thee file again and re-open it it'll run fine for about half a song (maybe more and the same problem persists?? i'm consolidating all my trackss, removing unused regions, not sure what else i can do?

[JMS40]

Could be denormalization.
Try putting a dither before the reverb plug.

[B Hind]

what do you have for a pc and what for pt.

[skwad]

the pc has an amd 2800 and 1 gig of ram, although i've got other sessions running tonnes more plug ins. also running pt 6.9