Marverix makes usb-to-vga display laggy
 

Hello,

I have a macbook air, 2011. And I have one of these vga-to-usb adapters:
http://img.dxcdn.com/productimages/sku_11209_1.jpg

My display link worked fine in previous version of OS X, but after upgrading to Marverix it has become very jerky and laggy.

E.g when I move the mouse onto the screen, I can see that it just jumps an inch at a time, everything happens .5 seconds after it acctually occurs, it appears to have 3-5 frames a second type of thing.

I have tried updating to the latest beta driver 2.1 as mentioned here:
http://www.displaylink.com/support/mac_downloads.php

But it's still laggy and jerky.

Is there a solution for this?

Thank you

Leo