I have the MX1000 BT mouse, I do experience skipping and jerkyness. The only time i experience this is when i have a Bluetooth 1.2 or 1.1 compatable device connected, like my samsung bluetooth headset. But, once i disconnect it, the mouse runs smooth again. Dont know if this is the same case for you but its worth a shot. Also if your running a windows rig make sure you got the most current drivers.