Totally unplayable framerate + crash

[kharmadillo]

My PC was capable of running this game fine before the BETA release, but now the framerate is about 4 frames per minute, and eventually the game just stops responding and I have to force-close the program from task manager. I can handle most other new games on max settings, so I'm not entirely sure why it's having such a problem with Kenshi. My internals are:
- Intel Core i7-4710MQ CPU @ 2.50GHz
- NVIDIA GeForce GTX 870M
- 8GB RAM
- Windows 10 64-bit

The crash occurs seemingly when I tried to interact with the game during this low frame rate (memory-related?), but I also get the crash that people have reported when trying to import an old save file. Can't upload the crash-dumps at the moment, but will try to later.

EDIT: Resolved the performance issues to an extent by disabling vsync, but still has lag spikes. Importing game issue persists.