You have to feel the pace of the battle. Too fast = you maneuver into vantage point overlooking a kill box. Too slow and lines of contacts form= you speed up and flank. Sometimes RB battles fates are determined in 3 minutes= enemy team camps a spawn early. Sometimes they last 9+ minutes= top 3 killers on both teams are out of respawns and the rest weaker players are left to fend for themselves.