# Arcade Physics fixed vs. variable step

**URL:** <https://phaser.discourse.group/t/arcade-physics-fixed-vs-variable-step/7355>\
**Category:** Examples\
**Created:** [September 4, 2020, 8:27pm UTC](https://phaser.discourse.group/t/arcade-physics-fixed-vs-variable-step/7355 "2020-09-04T20:27:40Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![samme](https://yyz2.discourse-cdn.com/free1/user_avatar/phaser.discourse.group/samme/32/5275_2.png) [@samme](https://phaser.discourse.group/u/samme)\
**Post date:** [September 4, 2020, 8:27pm UTC](https://phaser.discourse.group/t/arcade-physics-fixed-vs-variable-step/7355/1 "2020-09-04T20:27:40Z")

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[Phaser.Physics.Arcade.World#fixedStep](https://photonstorm.github.io/phaser3-docs/Phaser.Physics.Arcade.World.html#fixedStep) ([#4989](https://github.com/photonstorm/phaser/pull/4989 "New property Arcade.World.fixedStep"))

> Should Physics use a fixed update time-step (true) or sync to the render fps (false)?

https://codepen.io/samme/embed/preview/NWNaGbQ?default-tabs=js%2Cresult&height=300&host=https%3A%2F%2Fcodepen.io&slug-hash=NWNaGbQ

https://codepen.io/samme/embed/preview/KKzyxdz?default-tabs=js%2Cresult&height=300&host=https%3A%2F%2Fcodepen.io&slug-hash=KKzyxdz