Not having taken a note of the reg pressure before you started, you are kinda in the dark, but if at 100 bar the rifle is not performing, then you need to go lower. Steyr regs run at 85 bar so do Walther regs, Anschutz can be lower than that.

You have done nothing but alter the reg pressure, so nothing else in the rifle should need changing in order to get to more acceptable velocities.