pwm signal delay

[3dude_2231]

hi there,
it is known that there are intervals between pwm signals,
these intervals can vary between 10mS and 20mS,

my question is, where is the code that handles the pwm signals?
well, our team's camera servos are tweeching,
and I suspect it may be caused by irregulations in the pwm signal.

many operations are done in the period between signals,
and that fact might cause the intervals to extend beyond range.

for example, it was written in CD, that ini one team, tweeching occured
while writing to EEPROM,
an action (for those who aren't familiar with EEPROM),
that consists of a few cycles => it takes some time to finish.

is it possible to change the default delay period?

thanks in advance,
Ran.