I ran my Christmas Show last year and my current Halloween show, both having over 6,000 channels, using Vixen 2.1 on a Toshiba laptop with an i7 processor running Windows 8 and have had no problems. I didn't have major problems with my old Vista machine until the added pixels which slowed it down to a crawl. By the way, I'm also very happy with the way Nutcracker runs on the Toshiba.