Well, actually, yes, if you have that much flute on your end mill. 1.6mm of engagement isn’t very much for a tool that large. If you’ve got the right collet for a 6mm endmill, use it, the removal rates are so much better with larger tools.
I ran it for a SO3, and it reports 1628 mm/min (63 in/min) with the fixed .09mm/tooth engagement. That’s about what I would expect.
“RPM Maxed out” means that if there was more rpm available (the spindle could run faster, which the nomad setup says is limited to 10k rpm) it could run at a faster feed rate.
The deflection is on the high side, particularly for a single flute endmill - they don’t have a lot of “meat” in the middle because of the large flute, then the bottom most cutting tip starts to chatter and breaks off.