# \[bug-1038\]8.1 Tag Browser causing high CPU utilization

**URL:** <https://forum.inductiveautomation.com/t/bug-1038-8-1-tag-browser-causing-high-cpu-utilization/41053>\
**Category:** Ignition\
**Created:** [November 30, 2020, 5:07pm UTC](https://forum.inductiveautomation.com/t/bug-1038-8-1-tag-browser-causing-high-cpu-utilization/41053 "2020-11-30T17:07:55Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Matthew.gaitan](https://avatars.discourse-cdn.com/v4/letter/m/59ef9b/32.png) [@Matthew.gaitan](https://forum.inductiveautomation.com/u/Matthew.gaitan)\
**Post date:** [November 30, 2020, 5:07pm UTC](https://forum.inductiveautomation.com/t/bug-1038-8-1-tag-browser-causing-high-cpu-utilization/41053/1 "2020-11-30T17:07:55Z")

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Hey all,

I’m testing upgrading one of our systems that’s on 7.9 to 8.1 and I ran into an issue.

If I have the tag browser open / interact with it and a lot of tag writes happen to a folder that’s visible (but not open) in the tag browser my CPU utilization will jump to 80-100% and stay there. It usually get’s to the point where it freezes my whole system.

In 7.9 this would only occur if i expanded the folder that had all the tags, which is understandable as there are a lot of tags in that folder, but in my opinion it shouldn’t occur by simply having the folder visible in the tag browser.

Has anyone else seen this?

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 30, 2020, 5:15pm UTC](https://forum.inductiveautomation.com/t/bug-1038-8-1-tag-browser-causing-high-cpu-utilization/41053/2 "2020-11-30T17:15:13Z")

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Yes, this is a known issue that’s (high) on our list to fix. I’ve added this thread to the internal ticket.

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**Author:** ![Matthew.gaitan](https://avatars.discourse-cdn.com/v4/letter/m/59ef9b/32.png) [@Matthew.gaitan](https://forum.inductiveautomation.com/u/Matthew.gaitan)\
**Post date:** [November 30, 2020, 5:23pm UTC](https://forum.inductiveautomation.com/t/bug-1038-8-1-tag-browser-causing-high-cpu-utilization/41053/3 "2020-11-30T17:23:33Z")

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Oh cool,

I thought I was going crazy.

Any chance there’s also an issue with tag creation being slower? I’m working through a ticket right now with Cirrus Link where my MQTT tags are taking like 30+ minutes to create 400,000 tags while on 7.9 it took less than 10 seconds.

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 30, 2020, 5:59pm UTC](https://forum.inductiveautomation.com/t/bug-1038-8-1-tag-browser-causing-high-cpu-utilization/41053/4 "2020-11-30T17:59:10Z")

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Hmm, I’m not aware of anything, but we are still working through some other tag issues.

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**Author:** ![Matthew.gaitan](https://avatars.discourse-cdn.com/v4/letter/m/59ef9b/32.png) [@Matthew.gaitan](https://forum.inductiveautomation.com/u/Matthew.gaitan)\
**Post date:** [November 30, 2020, 6:11pm UTC](https://forum.inductiveautomation.com/t/bug-1038-8-1-tag-browser-causing-high-cpu-utilization/41053/5 "2020-11-30T18:11:03Z")

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Alright, hopefully it’s a Cirrus Link issue then! Thank you 🙂