Mouse disappearing Windows 8.1

[impact]

Hi,

we have six Samsung Ativ 9 plus connected with Targus ACP70EU and we've experienced mouse cursor disappearing on everyone of them.
The mouse is still working but you cannot see the arrow.
The cursor appears again only after reboot.

The docking station is connected to a 24" monitor at 1920x1080 resolution.
OS is windows 8.1 with all updates installed.

PCs are cloned so softwares and settings are the same.

I attached the zip from Displaylink supoort tool run on one Ativ 9 plus.

Thanks in advance

Andrea
Impact spa