Insanely Slow Loading on New Computer

[starsrift]

New computer is an Alienware 15x R3, got it on Monday. It is taking forever to load into missions. Without exaggeration, the loading bar takes over 10 minutes to crawl across. Once I load in, it's buttery smooth. My GPU fan barely has to spin up. If I leave the mission and then reload that same tileset/enemy group, it pops right in almost immediately (I assume, since the assets are loaded into memory). 

If I try a new node with a different tileset, we're back to waiting 10-15 minutes to load in, playing on Solo. I tried turning off "Aggressive Loading" from the launcher, but that didn't help. I did turn off Window's 10 Game mode stuff, and that seemed to help loading into the game itself. Anyone else know what might be happening here?

Edit: Even after rebooting, previously visited tilesets load normally. I guess... I just have to solo a mission on every tileset once so I can play normally? This is so bizarre. Is it resizing textures or something on the first run through?

 

Edited June 21, 2017 by starsrift