As I said in the PSA thread, I agree, the 64-bit engine is a big deal, especially for modding and what the game could become.Saw the discussion in the Game Sale PSA and decided to thread necro....
Textures, LOD and Shadows were what I noticed right off the bat. Not having blocky 8 bit shadows on Ultra settings is a definite improvement. I can't tell for sure if any poly counts on critters were changed.
The 64 bit executable should be a big deal, obviously there's still some issues that won't change due to the creation engine's limits since it's really showing it's age. The game's physics still seem as ..... twitchy as ever. I'm suspecting playing above 60fps is still butchered.
I am pretty disappointed in no native 3440 again though. I've got a 3/4 played through modded game on the original skyrim I'm going to finish when the 1080 Ti comes out and I'll probably hold off on doing much with the SE until the modders have had a bit of time to play.