So i been playing the game and my game crashed around 150 time before i took over all of Rhodoks. This area i find it were the most crashes happen. So i turned all the graphics to the lowest setting that did help a little then i disable sound that help also. THE THING I FIND THE BEST is that if you lower the battle size in the options menu down to 75 ish or lower it will not crash. I only do this if it has crashed if not then i leave it at 150.
I hope this helps let me know if you find out anything
P.S. Also if that still dose not work for some reason you can also just stand it a spot and let your troops do all the killing it helps also, but i find i do not need it if i lower the battle size.
I hope this helps let me know if you find out anything
P.S. Also if that still dose not work for some reason you can also just stand it a spot and let your troops do all the killing it helps also, but i find i do not need it if i lower the battle size.