My gut feeling is that with 935 on 110 bar with 33.5gr you are overdriving the reg. In other words not tuned well. I would back the valve adjustment out to fourth line and with PW set to max, find the max velocity for the current set point while adjusting the HS adjustment and not adding more HS than is needed. Once you know the max, adjust the valve knob in to drop the max by 5 %. Stop at line one and use HS adjustment if more drop is needed. This is the most efficient the reg can run at that set point. If you want a different speed, readjust the reg and go again.