# Disabled plugins still causing performance impact
**URL:** https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419
**Category:** Bug
**Tags:** pr-welcome
**Created:** [October 22, 2025, 10:00am UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419 "2025-10-22T10:00:15Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@RGJ](https://meta.discourse.org/u/RGJ)
#### Post date: [October 22, 2025, 10:00am UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419/1 "2025-10-22T10:00:15Z")
Since a lot of plugins have been bundled with core, we’ve been seeing some performance impact.
When investigating, it turned out that **some plugins are still injecting certain queries, even when disabled**.
An example is the topic voting plugin.
The [topic filter](https://github.com/discourse/discourse/blob/main/plugins/discourse-topic-voting/plugin.rb#L48-L78) and the [search filter and search order](https://github.com/discourse/discourse/blob/main/plugins/discourse-topic-voting/plugin.rb#L105-L116) are _always_ injected and active.
The code should be fenced with `SiteSetting.topic_voting_enabled`. Or maybe calls like `register_search_advanced_filter` should behave more like `add_to_serializer` and check if the plugin is enabled.
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### Author:  [@tgxworld](https://meta.discourse.org/u/tgxworld)
#### Post date: [October 23, 2025, 1:44am UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419/2 "2025-10-23T01:44:04Z")
Thank you for the report. I’ve tagged this #pri-medium for now and someone from the team will look at it soon.
Also putting a #pr-welcome on this 🙂
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### Author:  [@loic](https://meta.discourse.org/u/loic)
#### Post date: [October 29, 2025, 11:55am UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419/4 "2025-10-29T11:55:35Z")
I just finished a PR making most of the `register_*` calls behave like `add_to_serializer`:
[https://github.com/discourse/discourse/pull/35630](https://github.com/discourse/discourse/pull/35630)
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### Author:  [@loic](https://meta.discourse.org/u/loic)
#### Post date: [October 30, 2025, 9:07am UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419/5 "2025-10-30T09:07:12Z")
The PR has just been merged, it should be available in `latest` shortly 🙂
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### Author:  [@RGJ](https://meta.discourse.org/u/RGJ)
#### Post date: [October 30, 2025, 9:27am UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419/7 "2025-10-30T09:27:54Z")
Thanks, that is fantastic 😍
Would a backport to stable be a possibility for this fix ?
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### Author:  [@loic](https://meta.discourse.org/u/loic)
#### Post date: [October 30, 2025, 10:04am UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419/8 "2025-10-30T10:04:58Z")
Sure, I just created a PR:
[https://github.com/discourse/discourse/pull/35703](https://github.com/discourse/discourse/pull/35703)
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### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [January 27, 2026, 11:44pm UTC](https://meta.discourse.org/t/disabled-plugins-still-causing-performance-impact/386419/9 "2026-01-27T23:44:35Z")