There's currently a glitch with resolution settings right now. I'm going to put out a patch soon. Also Unreal has limited Anti Alias settings. Bare with me.
I've gone into "project-silverfish\SilverFish\Saved\Config\Windows" and inside the file "GameUserSettings.ini"
I've set the "sg.ResolutionQuality=0" into "sg.ResolutionQuality=100" and it has fixed the blur issue for me.