Hi, new to the forums. I am running a mac pro with dual quad core 2.26GHz processors and 20GB ram - early 2009. I use it exclusively for Music Production but have recently found that the processors are struggling when using some newly purchased plugins - namelyU-He Diva and Kontakt 5. Both of these plugins work on just one core while the others are idle and this one core maxes out quite easily. Is there any way to improve the performance of the mac under these conditions or do I just need to upgrade the system entirely? Any help would be appreciated.