Quick answer is..... painful

Yes it will even if you have a great computer. It is rendering your video as it previews. The more motion items/titles, and stuff you have the more it does it.

However when you render or produce it will be fine normally. You get used to it, but if it really bothers you then lower your preview resolution and look at the jaggies knowing it will be fine anyway. I preview in normal resolution. Looks crappy but after many years of looking at it, I don't really notice anymore. I am more worried that my transition work the way I modify them looking at them in lower resolution going smoothly than looking at them all nice and pretty and jerky.

You wont be able to do anything about it to improve it that much.
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Windows 8 Pro 64 bit

CyberLink PowerDirector 10 Tutorials
PDtoots PowerDirector Tutorials

**NOTICE**
When you are asked to provide a DXDIAG you go the following link and do part "B". Your posted specs are NOT what we are looking for as they tell us nothing. The specs on the box of your computer mean nothing. The DXDIAG shows us how your computer is configured as it runs.

DXDIAG Link

Ok, so even if I were to have say two Asus 6950's running in crossfire, The preview rendering wouldn't be improved?.

Thanks for replying.

Crossfire wont help you with PD9. Single GPU.
Hwyl
Dafydd

Thanks Dafydd

I'm not going to be wasting money on new hardware, when it's going to make little if any improvements on PD9 preview rendering.