The subject of this article appears in Call of Duty: Modern Warfare (2019)
"Double the duration of Tactical Sprint. Increase crouch movement by 30%."
Create-A-Class description

Double Time is a Tier 1 perk in Call of Duty: Modern Warfare. It doubles the player's Super Sprint duration, somewhat similar to Extreme Conditioning and Marathon from previous games, and increases movement speed while crouching by 30%, similar to Skulker in Black Ops 4. Since the 1.14.0 Perk rebalancing it also halves the recharge time for Super Sprint. It is unlocked by default.

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