We were doing an advanced construction hack. No other campaign was runned before this one.
A dire guardian was about to spawn in 2 seconds while there was a minute 30 left on the hack. I was switching between game speeds quite a bit from !!!! to 5. The game desynched at speed 5.
I think the biggest clue might be in what provoked the guardian layer. We did control a contingent system for about 17 minutes before the guardian layer got provoked so I do not know why it decided to turn on magically. It somehow got provoked when we were doing a hack 3 jumps away.
I do not feel like getting mantis but my partner tech made a mantis.