Managed to fix MH Wilds for me. Everything from shitty stutters to muddy look without removing volumetric lighting (which means other weathers look good too)
Fix for muddy volumetric lighting:
You need
SpecialK working with
latest binaries. Then once you install it and swap for latest binaries in appdata/local/programs/speciak you set in steam launch options:
SKIF %COMMAND% so it will launch via specialk everytime you hit play. Then you set up reshade inside of specialk. via
this mod description. Once you do that you download that mod reshade profile and enable it in in game (you need to turn on reshade in speciak menu), it is reshade but it is not simple recolor as volumetric fog now has a distance to player.
Before (muddy shitty loook):
After: Notice that you can actually see lightshafts now which you couldn't earlier !
Before: WTF is going on with such bright fog and washed out colors ?
After: you can actually see detail now:
Fix for reflex stuttering.
There are two stuttering issues actually one is due to textures and other is due to broken reflex implementation by crapcom.
Reflex is simply broken it has debug frames in it that cause CPU to overload and cause lag evenly that feels like major stutters even running at high framerates. Moreover even if you don't use it game apparently still runs its script in background causing major frame pacing issues.
In order to fix it you need to install above SpecialK and in SpecialK options you need to switch off reflex via:
Frametimelimiter >> Advanced >> Overrride game reflex mode >> Reflex mode : OFF
Before fix, you can clearly see major stutters.
after fix, straight clean line:
Fix for texture stuttering.
You need to download latest
Direct Storage dlls and put them inside game root folder. Once you have that in general streaming of assets will improve once you get into game and most of assets will load. This does not prevent completely stuttering but it improves it in major way. With it I can actually use highest texture pack dlc. If you have something worse than 4090 i advice running game on high.
After fix with highest textures on max.
Sorry for bright picture but sharex can't capture correctly hdr. It is first base camp with highest dlc textures. That place used to be stutter fest, now after initial loading frametime is completely flat.