Hello, you can set the smoothness level of the free modeling arc in Tools - Settings - Global Settings.

Low (High Performance): It means that the arc smoothing effect in the software is relatively low, but the computer is running at high performance;

High (Low Performance): It means that the arc smoothing effect in the software during modeling is the best, but the computer is running at low performance.

It is recommended to select Low (High Performance) for the design of the plan when drawing, and then select the High (Low Performance) option during rendering.