The pop-in has gotten worse from patch 1.04 to 1.05, noticeably with NPCs. Watching Priscilla sing her song was an absolute pain with hair and small details popping in on NPCs. Now combine that with the frequent pauses the music has in it for God knows what reason and the scene pretty much lost all emotional impact for my second playthrough. Very disappointing.
What really bugs me beyond anything is just the pop in. It's so bad for NPCs it's ridiculous. If you can see the unfinished rendering of the face of an NPC from about 1-2 meters away, you have a big problem.
There's also just generally strange pop-in for buildings in Novigrad. At the Place of Power where the huge Church of the Eternal Fire gathering is, one building literally pops in and out from the stairs of the Church building. It's the oddest thing I've seen so far.
So my main things that need to be fixed for 1.06:
Pop in
Alchemy crafting
Stutter while moving around the world