[One Winged Angel]

Still confused about D8's structure and would appreciate clarification. When I heard first three rounds were cumulative I assumed those scores would be summed and eliminations would start end of round 3 based on lowest total sums. But after seeing eliminations don't begin until round 4 on the dashboard, does cumulative in this instance just mean no elimination for the first three rounds and performance on round 4 alone determines the first players out?