I agree with Foostrap, your feed rate seems extremely low for your power setting. The 2500 watt trumpf 1030 i run cuts 16 ga ss clean at 275 in/min and 10 bar, -2.3 mm focal point, 1 mm standoff. You should be able to get at least 325 - 350 in/min with your 3500 watts.
Also, why are your...