Dear Rui
In case after the StarGo Software/Firmware upgrade are you still using your customized M-uno Mount Configuration file, please read the following topic
www.avalon-instruments.com/forum/welcome...ws-at-fast-speed#241
Probably this issue comes because in this latest version there was a motor ramp managment settings changing
So in order to resolve this issue, try to select the M-uno.mcf standard mount configuration file.
If in this way you fix the issue, then you can customize again your M-uno mount configuration file.
Please let us know about.
Kind regards