Dread Hunger is a UE4 game, and as a result has some secret settings that you can play with.
The files needed for this are in:
C:/User/WhateverYourUserIs/AppData/Local/DreadHunger/Saved/Config/WindowsNoEditor/*.ini
"AppData" is a hidden folder. The easiest way to access it is to open up the "run" dialog by pressing WindowsKey+R, then typing in "Appdata" without the quotes, and pressing "OK". This will open up an explorer window with your appdata directory.
Simply insert the blocks of text into the files specified.
Dread hunger mutes audio when it loses focus. You can stop it from doing this via the following change.
[Audio]
UnfocusedVolumeMultiplier=1.0
Dread hunger can output in HDR! The skybox is arguably a little dim, but otherwise I can't find any flaws. It really helps the snow look nice, and makes the footprints actually visible.
This is only a good thing if your monitor outputs HDR. If you don't know if it does, it doesn't.
In order for this to work, Dread Hunger has to be in fullscreen mode, not windowed or borderless. You can adjust this in the in-game settings.
This block also disables UE4's "autoexposure", which lightens and darkens the scene based on average brightness. I think this is reasonable to disable as an HDR display will simply display the entire brightness range and force your physical eyes to adapt instead.
Make sure you actually have HDR correctly set up in windows, and that your monitor supports HDR output, or you'll get some truly horrific output.
This doesn't work in linux, because linux doesn't have HDR yet. Grumble.
This config assumes you're using a monitor that can do DCI-P3. I'm not aware of any monitor that an average person might have that will exceed the DCI-P3 color space currently.
[SystemSettings]
r.AllowHDR=1
r.HDR.EnableHDROutput=1
r.HDR.Display.OutputDevice=5
r.HDR.Display.ColorGamut=1
r.HDR.UI.CompositeMode=1
r.FullScreenMode=0
r.HDR.UI.Level=1.75
r.DefaultFeature.AutoExposure=0
These lines may already be in this file. If they are, delete them and paste these new ones. Or edit them to fit. I can't tell you what to do; I'm not your mom.
bUseHDRDisplayOutput=True
HDRDisplayOutputNits=1000
Here are a couple things that might improve performance, but I haven't tested yet.
These are all in Engine.ini
r.OptimizeForUAVPerformance=1
r.SeparateTranslucency=0
r.SSR.Quality=3