zone screen. Why does the second display - the client - slow down?

Question

Multimonitor

I welcome everyone! I installed the ZoneScreen program. On a PC (Win XP) (as a Server) and on a Note (Win 7) (as a client). I make the laptop screen a "CONTINUE" of the PC screen (see as in the photo). Then on the laptop (client) , the cursor / moving windows with the mouse is very slow. I tried to change the rate, full copy rate, reinstalled firewood on the laptop, reinstalled the program itself, - it still slows down. Tell me who uses ZoneScreen, is it its "normal" mode, does it slow down for everyone, or is it just me?