Maybe it would work if the game just makes a copy in memory on the main thread, and then saves it to disc on a separate thread while the game continues afterwards?

Whenever I quick-save the game, it freezes for 5-10 seconds. Maybe I'm incorrect, but I would guess that quick saving is implemented in a synchronous fashion. If it is, then I think it definitely should be changed to be asynchronous. Regardless, quick saving makes the game hang, which makes for a ba...