sure!
goto this address in explorer
C:\Users\YOURUSERNAME\AppData\Local\Insurgency\Saved\Config\WindowsClient
open engine.ini with a text editor
delete all existing and place this
[Core.System]
Paths=../../../Engine/Content
Paths=%GAMEDIR%Content
Paths=../../../Insurgency/Plugins/Wwise/Content
Paths=../../../Engine/Plugins/Editor/CryptoKeys/Content
Paths=../../../Engine/Plugins/Enterprise/DatasmithContent/Content
Paths=../../../Engine/Plugins/Media/MediaCompositing/Content
[/script/engine.renderersettings]
r.MSAA.CompositingSampleCount=2
r.PostProcessAAQuality=4
r.ScreenPercentage=100
[/script/engine.engine]
DisplayGamma=2
save the file and right click it and click properties and tick the box that says READ ONLY and hit OK
the MSAA can be set to 2,4 or 8 but 2 is best without raping the GPU
Post AA you can mess around with but these settings are great for me.
Gamma default is 2 and 3 is quite bright