patch performing slow on PC

    Nov 18 2010 | 12:12 am
    I have a complex video mixer patch that runs smoothly (25FPS at least) on MAC.
    I would like to use a PC to run it, the thing is that on the PC it has a very low performance, only one of the 4 cores seems to be processing, and the overall CPU usage is 22%.
    Is there anything I can do to solve this?
    PC specs: XP Pro, Quadcore @2.83 Ghz, 4GB ram, ATI Radeon HD 4800
    Thanx in advance