You should run Logic in 64 bit mode. And Reason too, if it can. In 32 bit modus the theoretical RAM use limit for any app is 4 GB, in practice this is about 2,5 GB in Logics' case. More than that, and you're getting into all sorts of trouble, as you have seen. Only in 64 bit mode can Logic use all your available RAM.
Thank you very much!
I never tried that out because I just assumed that ment bye-bye to all my 32-bit plugins.
Do you have any experience with the 32-bit audio units bridge? Is it reliable?
I have another issue though, which is sort of off topic. Now that I'm in 64-bit mode I have less problem loading heavy sample based audio units, but as I do that to see what the machines made of I get CPU spikes on justone core, as the image shows, and the other ones does not even move. I have logic set to Automatic on Processing Threads, and have also tried manually setting it to 8 but no difference..