Do you have any video of you shooting?
The key to getting better times isn't faster splits, it's about shooting sooner.
That means to get in to a shooting position READY to shoot, and out of shooting positions efficiently - ie don't lose your momentum. You don't need to set up for a perfect shot.
Also, keep moving, don't stop unless you have to.
Shoot hard and easy exit/entry drills, get your gun up sooner. That will make your stage times better.