For starters I get these warning messages:
M_Chair Material /Game/StarterContent/Props/Materials/M_Chair.M_Chair was missing the usage flag bUsedWithNanite. If the material asset is not re-saved, it may not render correctly when run outside the editor. Fix
M_TableRound Material /Game/StarterContent/Props/Materials/M_TableRound.M_TableRound was missing the usage flag bUsedWithNanite. If the material asset is not re-saved, it may not render correctly when run outside the editor. Fix
Second; My minimal_default starter level is bright, with light colored chairs and a light checkered floor, but the video shows it dark and slate looking.
Am I doing something wrong?