In certain servers, when players are standing in the same location, significant drops in FPS can be observed on the microprofiler. We initially received reports of this issue in a gamemode where multiple players are initially teleported to the same location (up to 60 players in one location). The lag would persist for a minute after the start of the gamemode. However, some game servers were not affected by this issue, with no indication of why certain servers were unaffected. We first began seeing these reports over the weekend of August 5th-6th.
Screenshot depicts the initial spawn location of players in this gamemode.
With further testing, we were able to reproduce the lag spike with only 3 to 4 other players entering the same location (without respawning the character) in other game servers. We took microprofiles which identified the source of the lag as calls to newStepContacts - Adaptive and stepContacts.
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