I'm experiencing poor performance with playback on powerdvd ultra, which is probably due to poor hardware--I'm wondering if I should give up or if there is some tweaking possible. I'm trying this on a acer aspire 5520 which has an amd turion 64 tl-58 (1.9Ghz), geforce 7000M (dedicated 256MB video memory, up to 752MB shared), 2 GB DDR2, vista 32bit (downgrading to XP improves performance?) etc, using anydvd 6.3.0.9 beta, powerdvd 7.3.3516, nvidia gfx updated to forceware 101.54 from acer. any help is appreciated