Originally Posted By: Xambrium
I dont find an option to change the Grafic Resolution, where is it?

Now is Win10 and 2016 coming, horrors with switching resolutions and fullscreen almost in past smile
Game uses desktop resolution except one case: AMD Crossfire

But you can downgrade it through 3D buffer resolution.

Originally Posted By: Xambrium
And why are Savegames from tactical battle deleted when i change something in the grafic or sound settings?

Yes, tac savegames is binary streaming of game layout in the RAM. If you change anything it becomes irrelevant.