Pretty clever but you're an AI bot aren't you?

Thanks, seems very odd.

A stab in the dark but if you already haven't one thing you could check is to make sure that the dll files are not blocked by Windows:

Was SE working on the same system and OS installation?

Also keep in mind that just the grass mod as well as the density of grass will impact your framerate significantly, of course tree mod(s) as well. In general, unless you have more or less the exact same framerate affecting visual mods, game settings and the ENB preset it's pretty useless to compare ...

That seems to be a broken or incorrectly installed mod (or a mod conflict), nothing to do with ENBSeries directly.

Navigate to enbdev.com > Download > TES Skyrim SE > v.0.494 > download icon at the very bottom of the page.

You're welcome, that's great to hear.

I'm guessing you have terrain parallax enabled (EnableTerrainParallax=true or EnableComplexTerrainParallax=true) but you're not using landscape textures that actually support parallax.

If you want to go full vanilla disable the aforementioned ENB features.

Sigh. It's a shame users expect fancy graphical effects with all the bells and whistles with virtually no performance impact.

Since the cubemap is dynamically updated it already takes account the weather and lighting, though. Cubemap intensity that varies per location does not seem physically very plausible. What I mean is that then exactly the same object of the exactly same material would reflect differently depending on...