Mouse operation with delay

What me with this D-Link 4 port KVM switch is equal pushed uncomfortable, the mouse runs with lag behind ...
Similarly, the mouse trace that can be set in Windows, which is absolutely annoying!

Accurate and quick operation of the operating system is not possible, this is a death sentence for such a KVM Switch!

If you have a server and 1 client and sometimes even 2 customer / guest computer has, and not 4 keyboard mouse combinations
would like to have on your desk is a 4 port KVM already practically.
But not with such errors ...

My old Digitus PS / 2 KVM all work perfectly, are unfortunately only 2 times ...

This Digitus 4 times Pocket KVM I already had, which has the same quirks:
DIGITUS USB Pocket KVM Switch, 4-fold, incl. KVM Cable 1.2 m PU = 1

This 2 times Delock also here working mouse and keyboard easily and without delay.
Only the picture quality is not quite perfect! But if we look only at second glance, the Grieseln on TFT
DELOCK KVM cable 2-1 Version VGA, USB