Resently Game crash in the middle of the game

Hello,

i have the problem that since some months, that the game crash in the middle of playing. it happens everywhere (campaigne, pet dungeon, heart of gold, etc.). it happens more often since the undergames addon. i searched for solutions and tried changing the graphics settings, but nothing chances.

my core information:

windows 7 64bit

game is patched to the newest version

my pc is only 2 years old,  so i have the ressources for the game.

i play other games at high graphic settings without problems.

i added the crash report.

i hope you can help me, cause its ruined my fun with the game :(

crash report