Whoops forgot to update this. Behemoth got back to me on FB. So they suggested a few things, most of which is tried. But one thing I hadn't was power cycling both the Xbox and my modem/router. I tried that and it worked like a charm, haven't had the issue since.
Tried everything but uninstalling - reinstalling the game. When I open the game in the main menu there's just the loading hourglass in the bottom right. My save game doesn't show up and I can't start a new game. Any ideas on how to fix this?