Problem: "GFX Detail" setting resetting to medium!

[tecnoworld]

Hello all; I have the following problem with this game:

whenever I set the "GFX detail" setting to HIGH, it will resets it to MEDIUM when I restart the game. This happens just with that setting.

Is there a way to fix this? My gfx card handles w/o any problem the high setting (> 60fps).

Thanks and regards.