+1 on this. I'm running Build 31 via Steam on macOS 10.13.6. It's an older iMac, so upgrading to the latest macOS is out of the question, but it still meets the system requirements posted on Steam.
I'd like to add the following to the discussion, in case it hasn't been noted yet:
- Enabling/disabling the Steam Overlay does not seem to affect the issue.
- It's not just choppy gameplay on my system. I'd say animations are running at about 3-4 FPS, but I also notice that menu items do not respond properly. For example, the mouseover highlight of a menu item has a similar (or even longer) animation delay, and sometimes it takes several clicks on a menu item before the game registers the click. It seems like the whole game is not responding in those quarter-second intervals.
That's it. Happy to provide anything else that may be of assistance.