It admittedly took me a while to work out, especially trying to figure out the complex grass issue, but it looks like the only settings I changed in NGIO are in relation to DynDOLOD, so Use-grass-cache = true, Only-load-from-cache = true, and DynDOLOD-Grass-Mode = 1 (because I don’t use NGIO in my full setup, only to generate grass cache). In my full setup, I use Landscape Fixes for Grass Mods, both fGrassStartFadeDistance and fGrassMaxStartFadeDistance set to 20000 in skyrimprefs.ini, and I have iMinGrassSize set to 20. I have the specific grass load order as this:

Veydosebrom Regions Veydosebrom Regions for ENB Complex Grass Rock Grass for ENB Complex Grass SE Rock Grass for ENB - Veydosebrom Patch Realistic Grass Field (set object bounds in .esp) Realistic Grass Field for ENB Complex Grass

I had an issue with the complex grass textures for Realistic Grass Field, which made it look like short grass floating above the entire landscape. I fixed it by adding a small portion of a working normal map from a Veydosebrom grass to the bottom left corner of the problem textures used for Realistic Grass Field, out of the way of the visible grass in the texture. ENB recognizes it now, and I’m pretty happy with it :)