# How expensive is setting parameters that haven't changed?

**URL:** <https://qa.fmod.com/t/how-expensive-is-setting-parameters-that-havent-changed/24548>\
**Category:** Unity\
**Created:** [October 5, 2026, 11:52pm UTC](https://qa.fmod.com/t/how-expensive-is-setting-parameters-that-havent-changed/24548 "2026-10-05T23:52:41Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![kalman](https://avatars.discourse-cdn.com/v4/letter/k/59ef9b/32.png) [@kalman](https://qa.fmod.com/u/kalman)\
**Post date:** [October 5, 2026, 11:52pm UTC](https://qa.fmod.com/t/how-expensive-is-setting-parameters-that-havent-changed/24548/1 "2026-10-05T23:52:41Z")

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I habitually write code to remember the current value of FMOD parameters and only set them if they change. Both properties that hardly ever change (e.g.`IsPlayerDead`) and those that typically change every frame (e.g.`RPM`if the vehicle is not idle).

How important is that? Does FMOD already do it (FMOD 2.03)? It’s not a big deal but it’s still code I need to write and less code is good. I could imagine it affecting what gets logged in the profiler.