Does the issue occur in the editor or during gameplay?
Editor
If it's a gameplay issue, please specify which movement system and camera type you're using (free movement vs. grid movement, third-person vs. first-person) or N/A if not applicable:
N/A
Briefly describe the issue you're experiencing:
When I quick start my game, it will begin spamming the console (see screenshot below) and take 3-5 minutes to load the game. Sometimes it happens, sometimes it doesn't.
Are there any errors in the in-game debug console or external console window?

Provide the steps necessary to reproduce the issue:
I can't get it reliably to happen, but it's only started happening since 1.3 update.
Provide a download link to the bare bones project (strongly recommended if it's an in-game issue, since this helps significantly when attempting to reproduce it; the report will also be given more priority in this case):
n/a