Doncis wrote:So, not only acceleration, but also feed rate effect corner rounding? Fast feed - more rounding, slow feed - less corner rounding?

The maximum speed when moving depends on the centripetal acceleration and the radius of rounding the corners.

https://www.khanacademy.org/science/physics/centripetal-force-and-gravitation/centripetal-acceleration-tutoria/a/what-is-centripetal-acceleration

V = sqrt(a*r)

If the acceleration of your machine: a= 0.3m/s², max R =< 0.1

then the maximum speed on this arc = 0.328 m/min - Feed will not exceed this value.

But the opposite situation is if you set R=<10, F=1000, a=0.3,

then the machine will pass a trajectory with a radius of ≈3.7mm(not 10), since its acceleration is large enough to maintain the set feed on this trajectory but with a smaller radius.

This explains why a small Corner error makes your machine slow and jerky.

The machine will be faster if you increase smoothing or increase acceleration.

Another screenshot from linuxcnc: