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# Playback Control Speed
Control the relative speed of cues running on a playback.
## How Playback Speed Works
When you adjust the Playback Speed, machine movements scale proportionally. For example:
* Original movement speed: 8 inches/second
* Playback Speed set to 50%
* Actual movement speed: 4 inches/second
### Key Features
* Adjust speed before or during cue execution
* Dynamically change sequence velocity mid-move
{% hint style="info" %}
Note: Only machine movements adjust speed. Delay Triggers maintain their original programmed timing.
{% endhint %}
## Compatibility
### Supported Stagehands
Playback speed control works on:
* Stagehand Pro 5
* Stagehand Apprentice 2
* Stagehands with Unipolar V6 Card
These models support "live" speed adjustment during cue execution.
### Legacy Stagehands
For Stagehands with earlier card versions, playback speed adjustment will not affect movement speed.
{% hint style="warning" %}
Verify your Stagehand's card version before attempting speed control.
{% endhint %}
---
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