Are you on a PC or a Mac? Are you rendering directly to WMV from Ae? If so, have you tried rendering with the Lossless preset, then encoding to WMV separately in a compression application? If not, what workflow are you using to make your WMVs?
Walter Soyka
Principal & Designer at
Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
RenderBreak Blog - What I'm thinking when my workstation's thinking
Creative Cow Forum Host: Live & Stage Events