A few things to note about this DLC.
1. The pop in and visual glitches are out of control compared to the base game. They released one patch so far and it really didn't fix anything. The main building at fleets end loads before your eyes from only a couple hundred meters away. The tress and shadows have a ton of pop in like the video shows. I've seen multiple visual errors such as misaligned terrain, holes in rocks that show the liminal videogame underworld and I've even seen the water LOD glitch and appear to be sideways going up a cliff in the distance.
2. In the cutscene where you sit on the log by the ocean with Seyka, the fucking sun changed positions in the sky three times!!! What is that! It was insane.
Hopefully they fix a lot of this which I'm sure they will. But it's obvious is was probably released a little bit faster than it should have been.