video stutters

[prey]

hi again -

encoder: tmpgenc

after a few more tests with CQ, 2-pass, and automatic vbr, i personally preferred the quality produced by CQ

however, in some scenes the video stutters. is there any way around this?

current cq settings:
'quality' setting - 75
maximum - 3000
min - 300

motion - high (slow)
dc precision - 10 bits

i've tried fiddling with these figures but to no avail.

could it be due to slow hdd (4500 rpm) or cpu (800mghz)?

it would be great if someone can lend me some advice...ta =)

[prey]

btw my source and output is pal if that helps and audio is set at 160 kbps (although i cant see why it would effect it)

thanks in advance for ur input