# Effects CPU usage when return bus has no signal passing through it?

**URL:** <https://qa.fmod.com/t/effects-cpu-usage-when-return-bus-has-no-signal-passing-through-it/20107>\
**Category:** FMOD Studio\
**Created:** [April 12, 2023, 3:01pm UTC](https://qa.fmod.com/t/effects-cpu-usage-when-return-bus-has-no-signal-passing-through-it/20107 "2023-04-12T15:01:15Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![torley-gallium](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/torley-gallium/32/3688_2.png) [@torley-gallium](https://qa.fmod.com/u/torley-gallium)\
**Post date:** [April 13, 2023, 9:18am UTC](https://qa.fmod.com/t/effects-cpu-usage-when-return-bus-has-no-signal-passing-through-it/20107/3 "2023-04-13T09:18:11Z")

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@joseph Thanks for clarifying.

And since there is NO current way to automate plugin bypass state ( [Effect bypass automation function plans? - #15 by joseph](https://qa.fmod.com/t/effect-bypass-automation-function-plans/17662/15) ), there isn’t a straightforward workaround for momentarily disabling resources when return effects aren’t in use (some kind of “idle mode”), right?

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_[View the full topic](https://qa.fmod.com/t/effects-cpu-usage-when-return-bus-has-no-signal-passing-through-it/20107)._