I've been having this exact problem ever since Patch 5 dropped as well. The game loads like a dream on the Nautiloid, better than previous patches, but as soon as I reach the beach I start experiencing that pop-in that you're showing in those screens. It's way more frustrating than a long loading screen somehow.
For reference, my PC is about 4 years old, and while it's not top of the line, it's decent enough. I meet all of the games minimum specs and most of the recommended specs.
