
How to recreate:
1. Craft an item, or look at the research screen.
2. Mouse over an item in the crafting queue, or an item unlock in a tech.
3. Proceed to game freeze, then to the game resuming.
This doesn't happen on a vanilla game, so it's either a mod causing the bug, or some other weird thing involving having 69 mods installed.
EDIT: Link to the mods