There are some additional settings that you can change to increase game quality even more than ingame settings allow, to do so you can add '[/script/engine.renderersettings]' to beginning of file 'Engine.ini' located in "%LOCALAPPDATA%\VotV\Saved\Config\WindowsNoEditor\" folder, and write some commands separated with newlines (full list is at https://framedsc.com/GeneralGuides/ue4_commands.htm)

Not all of them work for this game, but here are some that I used to get better quality (only for powerful computers):

[/script/engine.renderersettings]
r.shadow.maxresolution=4096
r.shadow.pointlightdepthbias=0.05
foliage.maxtrianglestorender=1000000000
foliage.loddistancescale=20
r.viewdistancescale=20
r.allowhdr=1
r.hdr.display.outputdevice=1
r.ssgi.enable=1
r.temporalaa.algorithm=1
r.temporalaacatmullrom=1
r.temporalaasamples=64
r.ambientocclusion.method=1

These should work fine, and you can change them if you want. For example, if the game looks too sharp you can remove 'r.temporalaa.algorithm=1', if the game looks too blurry on movement or if you don't like motion blur you can add 'r.motionblurquality=0', if the game looks too dark on your screen you can remove 'r.allowhdr=1' and 'r.hdr.display.outputdevice=1', or remove 'r.ambientocclusion.method=1', if fps is too low you can change 'foliage.loddistancescale' to 2 instead of 20

And you can also add and experiment with different commands from https://framedsc.com/GeneralGuides/ue4_commands.htm to make the game look better for you

For faster and easier change of these settings you can download "Unreal Engine 4 Unlocker" to unlock the console that opens by pressing '~' key, that you can type all those commands in, and it also has some other things like free camera and teleport, that can help you if you got stuck somewhere in the game