I just finished most of the quest on Monarch, have to get the chemicals from Byzantium and I wanna go through Nyoka's quest on Edgewater. I land there, try to exit the ship with her and Parvatti and when exiting ship game crashes. I seem to run out of memory, 16GB on latest Win 10.

Happened to me as well when I was entering Byzantium, at that time I had pagefile set just to 1-8GB. Increasted it to 20GB and all loaded.

After finishing Byzantium main quest I tried going back and same issue. Lowering settings to lowest to try to reduce memory load didn't help.

Quicksave before ship exit included.

 

Quicksave01.7z

Try going into settings, turn fullscreen to window mode and set the resolution a little lower than max. Once the map loads, set everything back to fullscreen/max resolution. It's not a brilliant fix but I've managed to get passed all previous map crashes. This is something the devs need to fix. What's most puzzling is when my game crashed the cpu, gpu and memory usage was very low..

Lowering to fullscreen 720p did it, thanks.

 

All in all its well optimized for UE4 engine, well done.