Default m_TimeUnit to invalid so that UpdateDurationColumn runs 1st time
Default m_TimeUnit to invalid so that UpdateDurationColumn runs 1st time

Lssikkes/renderdoc,cgmb/renderdoc,TurtleRockStudios/renderdoc_public,etnlGD/renderdoc,etnlGD/renderdoc,Velro/renderdoc,Lssikkes/renderdoc,baldurk/renderdoc,googlestadia/renderdoc,Zorro666/renderdoc,Lssikkes/renderdoc,Yours3lf/renderdoc,Yours3lf/renderdoc,Yours3lf/renderdoc,michaelrgb/renderdoc,victor-moya/renderdoc,michaelrgb/renderdoc,googlestadia/renderdoc,Yours3lf/renderdoc,michaelrgb/renderdoc,Zorro666/renderdoc,etnlGD/renderdoc,etnlGD/renderdoc,googlestadia/renderdoc,Yours3lf/renderdoc,baldurk/renderdoc,googlestadia/renderdoc,Zorro666/renderdoc,TurtleRockStudios/renderdoc_public,michaelrgb/renderdoc,Velro/renderdoc,victor-moya/renderdoc,victor-moya/renderdoc,TurtleRockStudios/renderdoc_public,Lssikkes/renderdoc,etnlGD/renderdoc,googlestadia/renderdoc,Lssikkes/renderdoc,TurtleRockStudios/renderdoc_public,baldurk/renderdoc,cgmb/renderdoc,michaelrgb/renderdoc,cgmb/renderdoc,victor-moya/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Velro/renderdoc,Velro/renderdoc,googlestadia/renderdoc,TurtleRockStudios/renderdoc_public,cgmb/renderdoc,baldurk/renderdoc,etnlGD/renderdoc,victor-moya/renderdoc,victor-moya/renderdoc,TurtleRockStudios/renderdoc_public,cgmb/renderdoc,Velro/renderdoc,Zorro666/renderdoc,Lssikkes/renderdoc,Zorro666/renderdoc,Yours3lf/renderdoc,Velro/renderdoc,baldurk/renderdoc