While I'm not Firewall, 1.04 certainly has made the game pretty much unplayable for me. Before on 1.03 it was jerky at points but it was for the most part playable. Now on loading Chenerus just in the editor moving about to place a unit its laggy. Place a single bloke in a forest and the lag when turning is a joke, like trying to move in treacle. That does after moving around a bit go away but then I'll be running around and just get a random CTD. On some of the scenarios the graphics will go funny with the usual white textures and artefacts. I've tried a number of Nvidia drivers, including the beta ones you've posted and the results are always the same. I've added the usual maxmem, winxp and cpucount to my shortcut, at most all that helps with is the loading of textures and lods. The most anoying thing of all is I can't go back to 1.03 as I brought my game via steam and as such all the updates are added automatically even if they make things worse.