Windows Media Player BBC iplayer performance

I've got pretty much the fastest possible macbook (2.2 Core2 SR 4GB) but running BBC iplayer in Parallels is rubbish. The video is choppy - like looking at a slide show (the sound is fine). Has anyone got the BBC iplayer working OK in Parallels?

Have a feeling it is to do with the DRM stuff slowing it down - non-DRM videos in WMP appear OK. (I've read that DRM is not supported in Parallels but works fine, albeit slowly, for me)

 

On a MBA it won't even play in full screen!!

It does however play in a choppy fashion on Fusion.