MS3PnP A/C Idle Up Stutter When AC Turned to 3
 

I've got an MSLabs MS3 Basic that I've configured AC Idle up on after finally figuring out my wiring issues. It works okay-ish in the sense that it does not keep idle perfectly steady but does a good enough job to make the car feel normal. However, I have found one very odd exception to this: Whenever I switch the blower to setting 3 WITH the AC on, the car stutters hard. It happens when going from 2->3 or from 4->3. I've looked over the wiring diagram and am at a loss as to what could cause such a specific issue aside form just a huge increase in load on the blower motor. I've attached a wiring diagram of the circuit for reference:
https://cimg8.ibsrv.net/gimg/www.mia...1727e960b2.png