There’s nothing special about the output log, except is says it takes 10 seconds:
LogPlayLevel: PIE: StaticDuplicateObject took: (9.637963s)
LogAIModule: Creating AISystem for world IslandMap
LogPlayLevel: PIE: World Init took: (0.001145s)
LogPlayLevel: PIE: Created PIE world by copying editor world from /Game/Maps/IslandMap.IslandMap to /Game/Maps/UEDPIE_0_IslandMap.IslandMap (9.639402s)
PIE: Play in editor start time for /Game/Maps/UEDPIE_0_IslandMap 10,814