Tbh the drivers aren't exactly great at the moment, even though technically it should be up to the job. One thing for sure at the moment, which is to turn off/disable Aero on the desktop, and you might find that Media Center runs a lot better.
But other than that, it's probably wait and hope for better drivers I'm afraid.
Thanks for the response. I did turn off Aero (it seems criminal for the system to automatically turn it on given how horribly slow it works) and that did nothing. I'll keep an eye on the driver page and hope for something.
Yeah probably worth an email to ASRock too, Intel won't really listen to us as the consumer, but if the hardware partners get enough complaints, then they 'will' listen to them, and hopefully something will be resolved sooner rather than later.