Jed,

I just upgraded to BIAB 2011 and when I loaded in REALTRACKS DEMOs and tried to play them the sound was very choppy and distorted. When I brought up the Windows TASK MANAGER I discovered that my CPU Usage was at a constant 100%.

To read my thread go to REALBAND Form and look for the Subject Titled:
Using DXi and VSTi Synthesizers - RealBand 2010_5 Manual Page 51.

Bottom line is this: I "had" a DELL Dimension 2.54GHz with 1Gb RAM installed. Playing REALTRACKS in BIAB 2011 caused the sound to be choppy.
I just upgraded my RAM to 2Gb and all runs GREAT now. Even rendering to WAV is mind boggling fast.

Now, I am not sure if your issue is RAM related.....I know adding the additional 1Gb to my PC fixed my issues.

Hope this helps.

Mark