horizontal Mitsubishi M-H4BN with a Fanuc 18iM

programmed federate – 360ipm
high feed rate – 500ipm

when interpolating a voluMill toolpath the feedrate varies from around 60-360 as it should
The main problem is when the machine reads the high feed of 500 the machine literally
slams and shakes the floor when there is a direction change.

I don’t think this is a volumill problem but a machine problem.
We have some machines that automatically decelerate and a machine that we
have to add a code too to activate deceleration.
Is it possible there is a parameter for this?
This is a new used machine for us so I don’t really have a resource for
technical questions

what do you guys think?