If you just want video and don't care about the rest of the dashboard for now, TheDominis has made a lightweight video dashboard. Read about it here:
http://www.chiefdelphi.com/forums/sh...ad.php?t=82422
I'm also making custom dashboard software that will support video in C++ with hardware rendering for maximum speed, but it's not out yet. You can read about it here:
http://www.chiefdelphi.com/forums/sh...ad.php?t=80561
Another thing you can do is get a USB to Ethernet connector and run the dashboard on a faster laptop.