I’m still using v2.3 on an imac running el capitan with an M1 - I had problems with the newer OS as they cause the USB bus to go into a low power state when the screen goes off. Once the M1 is disconnected I found you had to remove the DMX cable, re plug the usb cable, rescan usb devices and then reinstall the dmx cable.
Not sure if I want to go V3 as I will have to upgrade the OS and can’t have the M1 going offline as volunteers have problems troubleshooting…