Thank you Matthew. You only need to package the project as is, and connect to the dedicated server. Within 2 hours, probably sooner (often it’s only 30-45 minutes for me), you’ll freeze.
I’ve tried removing all particles to no effect, it seems to me it might be one of the actors in the level (there are only 4 besides the character) are causing the issue as I’ve tested an empty map and it will only freeze when the actors are present (bp_goal, bp_jumppad, bp_powerups, possibly BP_ball though I don’t think the ball is at fault).
However, we don’t change any tick groups. We had tried moving a lot of particle components to TG_PostPhysics once, but yielded no results.
The call stack is ALWAYS the same no matter what combination of actors & particles produce the freeze.