RSGame Settings

hello i recently got on rising storm and i tried to lower the settings but the game didn't save i also tried to change the files to read only (E:\Users\rena\Documents\My Games\RedOrchestra2\ROGame\Config) and on (E:\Program Files (x86)\Steam\SteamApps\common\Red Orchestra 2\ROGame\Config) but it didn't work any help (btw i have windows 8.1 pro and 2 hard drives one ssd for the windows and on hdd all the programs )

RSGame Settings