I've noticed that Caveman2Cosmos runs very slowly on my system, which had no trouble with A New Dawn at all. Stuttering is so severe that terrain animated graphics (such as waves) is extremely slow and choppy and moving the mouse around the map is very cumbersome. I've also noticed that when I alt-tab to the windows task manager, there is severe spiking of CPU usage. This is on turn 1, I might add. Finally, when I quit the game to windows, I get an error message saying that Beyond The Sword had stopped working and that Windows could check online for a solution. This is unusual in itself, but when I click "Close the program" to get rid of the message, it pops up a second time. For the record, my system specs are very high and had no trouble with A New Dawn: Windows 7 x64 Core i7 980x (Gulftown) 6GB DDR3 RAM Crucial C300 SSD I tried running the mod at lower resolutions and with graphic options turned off anyway, but this had no effect on the stuttering. There are 2 things that I think could be going on with this mod: 1) This mod runs a lot of python. Having a multitude of python scripts has been known to cause this kind of slow-down (i.e. sheer volume of code) 2) There's something in the DLL modifications that's causing this (i.e. bad code) Has anyone else been suffering this kind of problem?