Cubase 5.1 Problem, cubase 5.1 problem when using plug-in Options

[kion]

any idea on this one?
i am using cubase 5.1 on mac 9.2 (laptop) and problem is the cubase cant seem to handle heavy plug-in... meaning i cant use all the good ones!
the sound stops or certain sounds will be ommitted etc. moog modular or waveshell is out of control. and everything suddenly slows down.
i dont know if it's cubase memory problem or plag-in or even my hard drive as it's laptop and it's been overloaded with so many things...
so give me your opinion on this please. cheers+

[denzillius]

I am running an ibook 800mhz with 320mg of memory, Cubase 5.1, mac os 9.22. I use Halion, TC works mercury and Waldorf attack.

I am constantly running up against processor spikes when using all three vst instruments together. The vst performance window gives a good idea of what is happening as i can see that the processor overloads, peaks in the red, then returns to it's stable 50-70% mark.

When the spike occurs, all audio, whether vst instrument or direct audio ismuted for a short period, then the processor returns to its normal level of use but the vst instruments wack out and have serious midi overload, causing me to have to stop playback, then wait for the midi to clear , then restart, only for it to occur a few moments later.

I contacted Apple in the first instance as i thought that this was an ibook problem, but they suggested that it would be a software problem.

I searched the Cubase forums but cannot find anyone owning up to having this problem.

The only way to go get round it seems to be to bounce any vst midi down to audio, then replace the midi parts with the audio. This is time consuming, and removes the flexibility of using midi instruments, it also degrades the audio quality somewhat.

I have no real answer to the processor spikes, but hope maybe someone does!?

(Other than upgrading to OSX and rebuying all my software of course).