This happens because of the host controller of the ports sending data to all ports + the hubs. Error correction gets too high and the buffer can´t handle it.
Best connection scenario
– Always connect the machine directly to a usb-port on your computer, not a USB-hub.
– You can use a hub in the machine to add machine and dongle to, connect the hub directly to a usb-port on the computer.
If you get stutter like this, some things to test
– Get a powered hub
– Remove other connected perhipals, like mouse or printers.
– Try swapping the usb port used on the computer
If you still get stutter or hesitation on your machine it´s due to the limited hardware of the original controller, consider a upgrade of the controller.