What is odd that in the SONAR Platinum days, the default bit rate was 128kpbs, but it's now 256 kbps, so there's seemingly a way for SONAR/CbB to tell the encode what to use...
64 bit applications (and dll's like VSTs) should absolutely not be creating folders in Program Files on running (it's part of the "64 bit Windows spec") - 32 bit VSTs may well do because they were written in an age when this was OK to do. Are these 32 bit VSTs by any chance? If so, better to move just them out of the Program Files folder into somewhere safe.