After many months of frustration with the above problem, I've been able to remedy my problem ..

After viewing the Device Manager in my Surface Pro 3, I found "double" (identical) entries under "Mice and other Pointing Devices"
What caused it I do not know and I was unable to delete either as it was simply restored after a reboot.

My remedy was merely to "disable" one of the HID Compliant Mouse drivers .. Simple .. but works for me !

Good luck if it helps you ..