Not in memu, but you could edit some files or use the console.
"Universal unreal engine 4 unlocker"
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, is a way to recreate the UE4 console and have access to any common commands an Unreal game would have (for some reason not always works so you would need to close the game and try again until it says that in game console is available). This are some of the graphic command settings you find in game menus, to turn off bloom, motion blur, among other things, some of the commands/values I use in this game are:
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