Ok, same here
Logic 9.1.8, Mavericks, Quad core i7, 16gb RAM, I am using an external 7200 rpm drive.
I was running logic pro 9 in OSX 10.7.5 for ages and my projects were running fine. I never once noticed the CPU levels spiking into the red. EVER.
I upgraded to Mavericks and now 2 of the CPU's are constantly in the red! While the others look normal.
It is the same in 32 bit or 64 bit mode.
This is such a joke.
Surely this is a bug in Mavericks?
I am about 1 day away from quitting logic forever and buying cubase 7. And after that i'll probably buy a pc.
Are Apple going to fix this? Or will they just tell me to upgrade to Logic X?
Well actually i wouldn't mind trying logic X to see if it has the same issue... but oops Apple forgot to make a trial version.
I have tried changing a whole bunch of settings in Logic, but to be honest I don't see why I c=should even need to try that. Surely it should work the same in Mavericks - if not better right?
Aaaaarrgggh,