it wont optimize Arkham city and tells me to fix the settings in game first and that it cant pick up on all necessary settings.
Ive tried rebooting the system and looked at the game setting yet nothing.
I did a very quick 15 second google search and the problem is with the game itself and not with GE. Can't you just set the settings manually and forget about it? Just put everything as high as it can go, and if it lags too much tweak certain settings until you get acceptable performance.
One of the potential solutions was to uninstall and reinstall, which apparently installed a "newer" version of the game. It also might have something to do with being a Steam or non-Steam version.