Action speed

Action speed is a stat that determines how fast or slow a character performs actions, such as running, swinging a weapon, casting a spell, or recoiling from being stunned.

The total modifier to the player character's action speed can be viewed on the Character screen under the Defence tab.

Mechanics
A character's action speed determines the relative rate at which its animations play, thereby affecting the overall speed that their actions are performed. All of the character's actions that have an animated component are affected by their action speed. This includes moving, attacking, casting spells, throwing traps and mines, shouting warcries, summoning totems, and recovering from stuns.

Modifiers to action speed have a multiplicative effect on a character in conjunction with stats that affect the speed of specific actions, such as movement speed, attack speed, cast speed and stun recovery. Action speed does not directly modify such stats though. This distinction is relevant for game mechanics that care about what those stats are. For example, the rotation speed of and the brand activation frequency of  are both affected by modifiers to the character's cast speed; they are not affected by modifiers to the character's action speed.

Some monsters have a minimum action speed %. This prevents them from ever reaching zero action speed.

Active skill gems
The following skills from items affects action speed:

Ailments

 * Chill is capped at 30% reduced action speed. is capped at 30% increased action speed.
 * Freeze reduces action speed to zero, which means they will not move at all.

Shrines

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Other

 * Acceleration Shrine
 * Slipstream
 * Tailwind
 * Maddening Presence