First of all thank you for the best platform for mastering!!! I compared carefully and many times with virtually all others (Sadie, Pyramix, Soundblade, Sonic Studio, Samplitude) and Wavelab 7 wins, easy!
I use some heavy plugins mastering for 5.1 and sometimes it becomes too much for the computer to play. I always run at 192KHz with 64bit files. Many times I work with a large cache that gives me around 15 seconds of playback before silencing, barely enough to work. Using different cores for each plugin would make my life a lot easier. I always use the plugins on the clips. Almost never on the master section or on the tracks.
By the way, a Pro Tools issue that may be of interest: I use ProTools HD as my audio board, this makes it impossible to run the 64 bit version of Wavelab as it doesn’t comunicate with the PTHD drivers.
All the best,
Wavelab 7.2.1(build 600) 32bit
ProTools HD2 accel PCIE (v. 9.0.6)
Windows 7 ultimate SP1 (64bit)
Intel I7 Extreme 980X (running at 30x, so clock at 4GHz)
6Gig Corsair DDR3 (3x2)