I disabled OneDrive but did not see any improvement. I use LiveDrive so I disabled it and did not see any improvement. The problem is definitely worse when online but it is not limited to being online. I am seeing the same kind of problems when using Microsoft Word, Powerpoint and Publisher.Could it be that your Surface is still setting up and copying OneDrive files from its cloud? Exit OneDrive and see if it improves.
I uninstalled the HID-compliant mouse entries then restarted but there is no improvement. To give you an idea of what is happening, Frequently I will have to try 3 and 4 times to get the mouse to move.Okay,
Let's try removing your touchpad, and letting the Surface find it again, possibly making some settings.
Cortana Search for Device Manager, then choose Mice and Other Pointing Devices,
then remove the HID-compliant mouse entries by uninstalling, and immediately restart your Surface Pro 6.