How are you getting microstuttering if you are using 1 card? ;o also how many amps does your psu have?
its really annoying =(
and im not sure how can i tell how many amps i have ..
but here's whats written on my psu
AC INPUT: 115/230VAC 10A/5A 50/60Hz
AC OUTPUT: 115/230VAC 1/0.5A 50/60Hz