SYNTEC 6MB-MDf Door Square Corner problem

Hello,

I am trying to setup MDF doors with beveled rails. This requires a 3axis movement to square up the corners. I have done this many times before on other CNC's without trouble. However I am trying to setup on a CNC with a SYNTEC 6MB control and it seems to be overshooting on the 3 axis movement. I have ruled out issues with the G-code and tooling. I have noticed by drastically reducing the speed (10 IPM) I am able to get a good result. The problem is that in order to automate the process with Enroute the I have to run a pass all the way round he inside of the rail at that speed, not just the corners,and it's too slow for efficient production. Is anyone aware of a parameter that might improve the 3 axis movements?

Thank you in advance!