Barring game specific math, which I do like the 10% target PD, speed for any action shooting is regulated by the same thing. Speed is dictated by your front sight. At some point you will naturally transition to where you can break that rule and start doing stuff like point shooting, target focus, les refined sight pictures without thinking about it. But start at the front sight.
New shooters who shoot too fast for their ability outnumber those who shoot too slow by a factor of ten. I have personally doubled someone's ability in their first match by simply pointing out that those GMs in the squad really were seeing their sights for each of those shots and it was permissible for the new guy to slow down a little and focus on quality.