We have several reports of screen freezes on Mojave. Have you discovered anything useful on that matter? Despite having developed the game on Windows and macOS alike (2 out of 5 devs of the team are on a Mac), we never experienced the issue.
I have the very same issue on mac.
The game freezes after a while in combat.
FYI: I'm using an external monitor. Didn't notice it when playing on my macbook without a second monitor plugged.
Now... To try to solve this, I've changed from fullscreen to window mode and my game window is like... HUUUGE. I can only see 1/6 of the game screen and can't go back to fullscreen mode. Any ideas?
You can remove the preferences for the game. It won't remove your save, but you will see the introduction cutscene and dialog again.
The file should be located here:
/Users/%your_user_name%/Library/Preferences/unity.Alt Shift.Crying Suns.plist
Can you also tell me what is your hardware configuration?