[Kenn_Tran]

I'm testing a circular path with a KUKA robot. But whenever I update the project settings, it always takes over 30 seconds to update. This seems to only happen when I have external axis of the rail synced. When the robot is not synced it takes about 2 seconds where RoboDK also freezes. If I were to use a simple linear path, it also takes about 2 seconds with the external axis but without, it's pretty much instant.

[Albert]

To speed up the calculation of your curve follow project I recommend you reduce the "Allow the tool Z rotation" value or set it to zero instead of the default 180 deg.