CPU Suddenly Maxing Out When Multiple Projects Open

Guys,

Was wondering if anybody might have some ideas on a situation where multiple open projects results in the CPU quickly increasing until maxed out.  I did some testing and it seems LiveSynthPro may be the culprit when also paired with DFH Superior.  If any one project out of a group of loaded projects has LSP in the synth rack the CPU quickly increases until it maxes out.  Once I remove LSP I can do multiple projects without a problem.  At first I thought this must go back to the "LSP doesn't play well on multi-core machines". HOWEVER the part that confuses me is that even if I un-tick multi processor support within Sonar, this problem STILL exists.  So I'm not sure what the frig is going on??   Weird because I can get LSP to work fine in any one open project, but when I try to open more than one I get his crazy CPU behavior.  Anyone ever hear of this kind of problem with multiple open projects using LSP and DFH Superior??  Or any similar kind of problem I could research?
 
Sonic
 
WinXP Pro, Sonar 5, RME Fireface