Poor processor utilisation in Windowz
I've been using Bryce in Mac OS for years and love the fact that when I render, using high priority, it uses a high CPU percentage (between 250-300% on a MBP i7 dual core 2.66Ghz) to do fast renders.
On a new machine, due to the fact that Lion is not supported, I have had to resort to using Windows 7 Pro. Everything runs fine except the render. I'm using an iMac i7 quad core 3.40Ghz. When I check the processor utilisation during a render I'm disappointed to see it only using around 7% at best.
To this end I ran a test on both the aforementioned MacBook Pro vs the new iMac. Using the same scene (default new document) with exactly the same render settings, both set to high prioritisation, the MBP took 7secs and the iMac took 25!!!!
Is this the norm or is there something I can do to get it to use more??
Any help and advice is most appreciated.