For what it's worth, I've found this version of VIPro a bit wonky too in terms of CPU — I'm on a Mac Pro 8-core, running DS off of disk drives, but this build of VIPro is suddenly introducing weird CPU fuzz that wasn't present before...not entirely certain why since it doesn't always correspond with me doing something challenging with the strings.
I've also experienced a couple of crashes during loading, which I haven't seen before (loading the articulations matrix for the full group crashed within Logic, for instance).