In profile mode Mach cuts corners off? Shortest distance issue?

[JAZZCNC]

Your simply trying to go too fast for such small text with CV mode. 3600mm/min is way too fast for this size txt.
No way can a constant velocity be maintained at this feedrate on such small radius. You could try exact stop mode by typing G61 in the MDI before running code but it will shake the machine around.

You can play with the CV settings and increasing look ahead to get better but you won't get it to maintain travel at these feedrates in CV mode without rounding it's just not possible.!!

Unfortunately you will have to slow things down. I'd also increase accelleration in motor tuning as 100 is quite low.
Often with moves that are short like engraving etc your better lowering velocity and increasing accelleration in motor tuning. Often this lowers cycle times on small move work.?
Reason for this becomes obvious when you think about how each move or direction change works.?
Every move as to accelerate to commanded feedrate, travel at this feedrate then de-accelerate all before the next direction change happens.
Now on long moves it's no problem hitting the commanded feedrate even if high has we have plenty of time before the next move happens.
On short moves the time interval between moves comes very quickly and no way can high commanded feedrate be reached before having to slow down for next move so some speed clipping occurs. On large jobs like 3D work this clipping can amount to large time increase in cycle times.

Think of it like a race traffic light to traffic light between a F1 car tuned for speed and Bus tuned for stop to stop. When lights are streets apart then no problem F1 car wins every time but put the lights every kerb stone apart and Bus will smoke it.!!

Same thing happening here.!! No matter what you command the feed to be in G-code the machine can only go so fast before having to slow down again.
The feedrate reached will depend on the motor tuning but in general with higher acceleration the machine will produce shorter cycle times as it can reach a higher feed before slowing down again for next move or direction change.

CV is like trying to go around corners without slowing down. This is impossible in tight corners so rounding occurs, how much depends on the CV setting. With high feedrates then even when CV settings are dialed in good for best balance rounding will occur if feeds are set too high.

Edit: Oh and your G-code doesn't help matters by creating arcs with tiny lines. Try using a post processor that uses (i) (j) Arc moves instead of breaking each arc into tiny straight lines. Could also be a setting in the Cam software.?