DVD movies runs choppy from HD whit Daemon Tools

[Jabe]

Operating System: Win XP SP2
Burning Software: Nero 6
Anti-virus Software: Avast and AntiVir
DAEMON Tools Version: 3.47

When i mount image(DVD Movie) from HD whit Daemon Tools, it runs choppy on DVD player (InterVideo WinDVD4, Nero's DVD player), but when i burn it on dvd and put it on DVD drive it runs smoothly like it should. And this problem accurs whit all my DVD movies.
Is there anyway to fix this?

[Jabe]

doesnt anyone know any sollution for this.
the problem is betwene dvd player software and dvd image

[LAS3R]

Operating System: WinXP
Burning Software: Nero
Anti-virus Software: NOD32
DAEMON Tools Version: 3.47

Sounds like slow HD, or busy HD, check your cable so it supports Ultra DMA 5, newer cables does, but old flat ones usually don't , i'm talking about cables between your HD and motherboard!

[,jACkdA\W]

Operating System: 98SE/XP
Burning Software: lots
Anti-virus Software: AVir
DAEMON Tools Version: 347

Did you try... uh, don't bash me ...defragging your HD?

[Jabe]

i have sata cable betwene hdd and motherboard, and i think there is no need for defragging it because its about month old drive, but i try it.
system specs:
CPU: P4 @ 3012Mhz
RAM: 1024Mb
GPU: ATI Radeon 9600
so i think there is some power to run dvd movies.