I don't understand this with Beta 0.51. I was having trouble with the game being almost unplayable, units were not moving smoothly and there were long times between turns. In tactical combat especially, when I would attack an enemy unit, it would take three or four seconds for the action to complete. I posted about it and, thanks to some helpful suggestions, decided that I needed a more up-to-date graphics card. In the meantime, while I decided whether I wanted to make that investment, I did some things, like turning off anti-aliasing, to make the beta more playable for me. That helped some, but it was still awfully sluggish, especially after the first few turns. Then this afternoon, I started playing a game, and everything was just fine. Movement was smooth and the wait between turns was quick. I played for a couple of hours and things stayed fine. I can't figure out what happened. I haven't changed anything in my computer's configuration. Heck, I haven't even restarted Windows. Anybody know what's going on?