This is what happens when you sett higher speed without cv sett.
The higher speed the higher accerelation you need without noticable rounded cornenrs without CV sett.
I have my CV sett to 85 so itt makes an exact stopp for angles below 85 degreedes.
Iff you sett itt too low and run for exampele an 3dmodel you dont get a smooth cuttpath....itt stopps on ewery angle below your setting and itt will take forewer to machine out your piece.
Im running my homemade 2500X1200X160mm att 5000mm/minute and with 400mm/s acceleration on X/Y/Z.(slaved X)