W10 - Windows Fly Across Ultra Wide Screen at Random

[CRMS]

I'm using W10 on a PC with a 49" Samsung Ultra Wide Screen. I view programmes in windows about A4 size, and drag them to the centre area of the screen. I'm using a bluetooth keyboard with a track pad. As I move my finger on the trackpad, the displayed windows have a random habit of flying across the screen and down into the left hand bottom corner.

Which is getting a little boring.

I can't find a setting to disable this action??

Any suggestions.

 

[EsxPaul]

The only things I can think of to take a look at are the Snap Assist settings and the Touch pad settings. Perhaps the PC is thinking you are tapping and dragging as you touch down on the trackpad?