Not too flat not too overwhelming, just the right amount of sweetness.
I'm not exactly an expert on tweaking ENB, and this ENB is for my gameplay on a mid class PC.
Here is my PC specification:
Ryzen 5 3600
GTX 1650 SUPER
16GB RAM
2K textures + some 4K textures
Average FPS: 45-60 mostly above 50
Depends on your installed mods.
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VERSION 2 RELEASED!

・Tweaked the color to look more natural and vivid
・Added some new effects
Version 2 looks much better than the previous version in my opinion.
But the downside is... it will take more of your fps by 3-6 probably, because of the new effects.
Of course you can just disable it, so no big deal.
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There are no mandatory requirement but I set up this ENB while using Azurite Weather and ELFX + Enhancer
And if you want your game to look like in the pictures, here are some of the highly recommended mods.
WEATHER ADDONS
Night Skies - Stars and Galaxies - Cathedral Concept
TB's Atmospheric Moon Distortion
Ethereal Clouds
Volumetric Mists (pick Subtle Performance)
Dimmer Fog and More
WATER MOD
Water ENB
LIGHTING
Dynamic Volumetric Lighting and Sun Shadows
Lanterns of Skyrim II (install Tamriel Master Lights)
ENB Light & all other ENB Light mods that you can find
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Glazed ENB v.2
enabled effects by default
Post Pass Shader
Adaptation
Bloom
Depth Of Field
Ambient Occlusion
Procedural Sun
Distant Shadow
Detailed Shadow
Normal Mapping Shadow
Subsurface Scattering
Skin Specular
Complex Particle Lights
Sun Rays
Sun Glare
Water
Underwater Shader
Wet Surface
Rain Wet Surface
Reflection
If you have a spare fps, you can turn on Skylighting for better shadows.
If you're low on fps, you can disable Sun Rays but you won't get beautiful godrays.
But most importantly you should disable the game volumetric lighting.
By disabling it you will get much better fps and you can still get the godrays from this ENB.
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Feel free to post images or videos featuring my ENB Preset.
It would be very helpful for other modders to see the effects on different weather condition.