Yes. Sometimes when loading in I get an almost empty map, just ground texture, and then everything gradually pops in. It didn't happen in patch 4. No issues on the Nautiloid either as you mentioned, everything is smooth and loads quickly there. But I guess it is because of the size of the map. The main map is much bigger, you know? Unfortunately for me, outside of the Nautiloid area, my 2-5 minute loading times for save games haven't improved at all.
I've noticed, at least for me, the pop in also affects far away characters in cutscenes, which can look hilarious, doesn't happen a lot though. I saw my character far off in a cutscene and her make up was gone and popped back on as she got closer, it looked a bit spooky not gonna lie!