| 0x0028 | 0x08 | padding / unreflected |
| 0x100 | CurrentState | FWorldPartitionUpdateStreamingCurrentState | Transient+1 flags | {LoadedCells=<TSet>, ActivatedCells={Cells=<TSet>}} |
| 0x01 | CurrentStreamingPerformance | EWorldPartitionStreamingPerformance | Transient+5 flags | Good |
| 0x01 | bCurrentBlockOnSlowStreaming | bool | Transient+5 flags | false |
| 0x0132 | 0x06 | padding / unreflected |
| 0x48 | TargetState | FWorldPartitionUpdateStreamingTargetState | Transient+1 flags | {ToLoadCells=[], ToActivateCells=[], ToDeactivateCells=[], … |
| 0x100 | AsyncTaskCurrentState | FWorldPartitionUpdateStreamingCurrentState | Transient+1 flags | {LoadedCells=<TSet>, ActivatedCells={Cells=<TSet>}} |
| 0x48 | AsyncTaskTargetState | FWorldPartitionUpdateStreamingTargetState | Transient+1 flags | {ToLoadCells=[], ToActivateCells=[], ToDeactivateCells=[], … |
| 0x01 | bShouldMergeStreamingSourceInfo | bool | 5 flags | false |
| 0x02C9 | 0x127 | unreflected bytes to end of UWorldPartitionStreamingPolicy |