okay so i just tested 1.7 (1.6) and this is what I found
-The framerate on foot seemed to be improved slightly for the most part, even on my 11mb level 51
-The framerate on a horse dips frequently but not enough to make horse combat unusable, just annoying
-For me there is now alot more texture pop-in
-It could be my just trying to notice things but I think the draw distance was reduced
-Water dosen't freeze (thought i'd check)
-And the last thing i noticed is that I think loading times have slightly increased. That one will have to be asked around though
And that's what I noticed, of course i just noticed that I forgot to check nirnroot glow but im sure some one else will xD