One easy way to raise the performance of Virtual PC is to exclude it from scanning by your AV-Software.

Use this with no warranties, and confer no rights.

For the Real time filters - set the following processes to be excluded:

  • virtualpc.exe
  • vssrvc.exe  

For the extensions ignoring:

  • VHD
  • VMC
  • VSV
  • VUD
  • VFD
  • ISO

Do you know other things to improve the performance? Let me know, use the feedback link!