Previously I was using 77.77 as 81.85 was very bad. I tried 81.94 today, and boy what an improvement over 77.77! I have a nvidia geforce fx 5200. Playing a standard sized terra map, there is no lag at all right now, in the late 1900's with all map revealed, tons of cities and units.. I can scroll around no problem! Not as smooth as my geforce 6600, but not laggy either. Zooming out to globe view has the usual lag/heavy disk activity, but once I'm in globe view, same thing, I can scroll around without any problem now. MAJOR improvement, I'm pretty happy Full screen AND windowed mode act the same now too, where as previously I was getting slightly better graphics performance with windowed mode.