About this image

nexusmods seems real keen on serving a webp instead of a png; it might be lossless but I doubt the shader can load it anyway so idk ... whatever, good luck ...

This is a LUT combining the following effects from J.A.V.R.P. Reshade

Lightroom
MinimalColorGrading
prod80_03_Shadows_Midtones_Highlights
prod80_04_ContrastBrightnessSaturation
prod80_04_SelectiveColor_v2

This makes those particular effects have almost no frame rate impact while hopefully achieving a similar appearance? (I didn't test it much.)

A major downside is that it's not really possible to configure the shader values because it's all baked into the LUT image.

I use this with the LUT.fx shader setting fLUT_TextureName to the name of this file in the Textures directory (or in Texture search paths). fLUT_TileAmount 64 and fLUT_TileSizeXY 64. Those three settings are in "Edit global preprocessor definitions" > "Current Preset" > Click + to add each. This image should be a 4096x64 PNG, any lossy compression or alterations to the image will mess it up.

This won't have worked well if the shaders above do anything other than sampling individual pixels; like bloom, filmgrain, and sharpening shaders would all mess up LUT creation. So hopefully the shaders I tried to bake here aren't doing anything super fancy. I realized after that the Lightroom shader looks like it's meant for LUT creation. I kind of wish the author had done the color correction in one shader instead of using five or used Lightroom to make a LUT but they did a great job nonetheless.

The LUT.fx shader also has sliders for chroma vs luma amounts so if you find this LUT makes things a bit too dark, decrease the luma amount a bit?