This is already included in Real Lighting (and probably some other new light mods), and conflicts with RCRN. So maybe i'll recommend it only if choosing a pure ENB mod.
I can confirm it will be added back to STEP, also if i've noticed some weapons in Vanilla DLC are still more detailed than the mod, but the mod has very good style, and it is worth it even with the loss in detail.
This is my upcoming recommendation for SRO, i nSTEP 2.1: Open the archive: -From textures/landscape, extract ALL the loose .dds files (not the roads/dirtcliffs/mountains/etc folders!) to your Data/textures/landscape folder: -Do the same also for any available update.