Skyrim Special Edition

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Xerlith

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Xerlith

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About this mod

In the era of gouged GPU prices, comes an answer - Download more GPU performance! (clickbait over)
This shader allows you to boost your game's performance without any downsides - just render it lower and let the ENB sharpen it back up. If your GPU is the bottleneck, here's the answer.
You can also simply sharpen your native res, why not.

Requirements
Permissions and credits
IMPORTANT: Non-ENB users, go here.

So yes. This is the "Download more RAM" of Skyrim, except it works. And how? You run the game in lower resolution, and this postprocess makes it so you don't actually notice the fact.

You can also make your native resolution look sharper, but there's no fun in that, is there?

How to:
  • Download SSE Display Tweaks and set it up
  • If playing borderless, in the SSE Display Tweaks' .ini, set BorderlessUpscale to True
  • In the same .ini file change the ResolutionScale to about 0.7-0.8.
  • Unpack this file's contents to your enbseries folder
  • Start the game, enjoy the performance gains without noticing any visual degradation
  • (optional) Enable GPU upscaling in your graphics driver (if it's set to use display, hope your monitor has some god-tier upscaling chops) 
  • (optional) Adjust the ResolutionScale to a satisfactory (below 1, of course) level of fidelity/performance. Check how low it can go.

What's the catch?
This, at least currently, does only what advertised - make the image clearer/sharper. Any LUTs, vignettes, letterboxes - anything that your previous ENB provided inside the enbeffectpostpass.fx file - kiss them buh-bye. I WILL (probably) include LUTs and Subsurface Scattering tweaks at least, but no promises here.

Note: Even with the sharpening amount set to 0, if the resolution ratio is >1, you will get a sharpening effect. To compare the on/off appearance, disable the entire posteffects stack in the enb.

Disclaimer: If you're a Silent Horizons user, playing around with the unsharp mask it includes will give you very similar results and you won't lose the amazing suite of postprocess effects it offers. CAS is (IMO) slightly better for this express purpose, but SH's breadth of effects more than makes up for that.

FAQ:
But I thought the postprocess pixel shader works off of the internal game resolution, so how can this work?
Good question. 

You didn't answer the previous question.
That's right.

So does it work?
Yes.

I don't believe you.
Seeing is believing. Download and be amazed.

What ENB did you test this with?
An actual FAQ-worthy question. Surprised, ain't ya? Rudy ENB for Cathedral Weathers. I substituted only the enbeffectpostpass files.

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BIG ENORMOUS kudos to rhellct, who ported the CAS code over to the ENB's format.