Graphics and mouse pointer LAG still unresolved!

[AlanWooler]

Hi all.
I have a Dell Vostro 3560 (i7 8 threads with 16Gig RAM and a 256Gig SSD). I have an external 22"monitor connected through the VGA port, a 13" Toshiba USB (Display Link) monitor plugged in and a Toshiba U3.0 USB Port replicator that has another 22" monitor plugged into that. I was running Windows 8 and everything worked perfectly.
Yesterday I wiped my system and re-built it with Windows 8.1 and downloaded the latest DisplayLink driver for 8.1 and all the monitor work, but both the USB monitor and the monitor in the Port replicator both get major lag on them when moving the mouse, typing in anything or when moving anything like programs around in them. I have tried to play a video in them, but just lags so much. The actual laptop screen and the VGA cabled one work perfectly as they should, it is only the 2 that use the Display Link technology that have the lag. My collogue runs the same setup as me, but he has kept on Windows 8 and is still running perfectly and we are afraid to put him on the new driver in case that is part of the issue. The old driver that works on Windows 8 doesn't work on 8.1 sadly so I can't try that.

Would love to get a response, but from what I read so would many others in here.

Cheers
Alan