Surface Pro 2017 touchpad mouse freezing

Update - replacement signature cover made no difference. I've also tried the latest advice in this thread. Cleaning contacts and removing/uninistalling cover drivers/filters has made no difference. I now have the signature cover on my Surface Pro 3 (i7) where the hesitation is slight, with the old Pro 3 cover on the Surface Pro 6, which seems to work fine.

The hesitation is simple to recreate. Just continually circle the cursor using touchpad and eventually it will lose focus - the cursor stops and you have to lift the finger to reengage.

I am reluctant to try replacing the Pro 6 as I don't want to have to reconfigure a new one. I've tried running in safe/restricted mode with all non-MS software/drivers diabled - no difference.

I'm having cursor freezing using the trackpad with a Surface Pro 7 received on the release date Oct 22, 2019. The issue surfaced right out of the box with all original MS hardware/software including the signature type cover. To me, it felt as though the trackpad was not getting high enough priority by the OS and was being interrupted by some other process(es). Completed troubleshooting steps recommended on MS support site. At first it seemed it was a connection problem between the type cover and the tablet. Cleaning the connectors worked at first. Maybe cleaning the connectors well with isopropyl alcohol did help. Not completely sure about that because within an hour the problem returned albeit less frequently. I don't have many of the issues reported here like when the charger is plugged in or on certain circuits or around LED lights. However, yesterday I installed a Logitech Bluetooth mouse and noticed the cursor freezing in the exact same way a couple times while using it. I went back to the MS support site and followed instructions for uninstalling the "Surface Type Cover Filter Device" driver (Device Manager/Keyboards) and then rebooting the Surface causing Windows 10 to reinstall it*.*Over the past hour the cursor freeze has not occurred with either the trackpad or mouse. I'll update this post if it stops working

Nevermind, the issue started to show up again.

I have the pro 2017 and Signature cover and had the issue where when using the touch pad the cursor would freezing at randomly and I'd have to lift my finger up and put it back down to get it back. What fixed it for me was simply turning the backlight for the keyboard off. I guess the touchpad wasn't getting enough power when the backlight is on.

I have the same problem with a new Surface Pro 6 12.3-Inch Tablet - (Silver) (Intel Core i5, 8 GB RAM, 128 GB SSD, Intel UHD Graphics 620 with Signature Type Cover - Platinum. As an IT expert I have read, applied and tested all the suggestions in this thread with only two definite conclusions. I have an earlier Surface Pro 2 and standard cover keyboard. If I move the signature cover to the old Surface the issue moves with it. The issue does not occur when using the old type cover keyboard with the Pro 6. The problem is worse when charging (not just running off the power supply). Applying ferrite chohes and changing chargers (I have 3, all genuine) or docks stations (I have three, old and latest) makes no difference. The issue is primarily loss of focus from the mouse pointer when moving a finger around the touchpad - the mouse icon freezes and the finger has to be lifted and reapplied to get the pointer engaged again. The sensitivity of the touchpad can be so variable as to be unusable when the issue is at its worst.

I conclude that it is an issue with the signature cover itself and will ask for a replacement.