From manual;
Quote:

"The recommended maximum nexus value for commercial games is 200. When setting higher values, you should be aware that several Windows subsystems - including DirectX - tend to crash without error message when the virtual memory is running low"

So i don't understand why default nexus parameter of the wed is 300. it must be 30. Also it's 30 in the a6. Maybe the problem is just this or maybe not, because game is crash Between nx190 -nx340 but doesn't crash more than "nx340" or less than "nx190". Very strange...