This advanced guide breaks down the core combat mechanic of Honkai Star Rail that separates new players from endgame pros. Learn how speed, action value (AV), speed tuning, and pull bars control the battle timeline to help you clear tough endgame challenges. How Does Action Value (AV) Determine Victory? The Speed Revolution Rewriting Turn-Based RulesHave you ever found yourself stuck in this frustrating situation: In Memory of Chaos, your fully built main DPS hits like a truck, but the boss always gets to act first, locking your support down or one-shotting them before you can react. You stare at the turn order in disbelief as the enemy acts twice before your entire team gets a single full rotation. You stacked every possible damage stat, but you still feel trapped by the flow of the battle.You’ve been focusing all your attention on your character’s damage output, but you’ve completely missed the true core of Honkai: Star Rail’s combat system: speed.Now compare…