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High GPU usage(~100%) when terminal is in the foreground #4698

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opened 2026-01-30 23:54:27 +00:00 by claunia · 0 comments
claunia commented 2026-01-30 23:54:27 +00:00
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Originally created by @vineethrp on GitHub (Oct 29, 2019).

Environment

Windows build number: Microsoft Windows [Version 10.0.19008.1000]
Windows Terminal version : 0.6.2951
Lenovo Thinkpad P1 :
    Intel Xeon E-2176M
    Hybrid Graphics with Intel P630 and Nvidia Quadro P2000
    64GB RAM
Any other software?

Steps to reproduce

Very easy to reproduce. Have the performance monitor open and bring terminal to foreground. The GPU usage spikes.
I noticed this issue because, mouse becomes laggy and UI is almost unusable.

I am pasting two screen shots when the terminal goes foreground and when the terminal goes background

High GPU usage when the terminal is foreground

terminal_highcpu

Low GPU usage when the terminal goes background

terminal_lowcpu

Expected behavior

A relatively idle terminal should not be consuming 100% GPU and there by freezing the UI

Actual behavior

UI lockups due to 100% GPU

Originally created by @vineethrp on GitHub (Oct 29, 2019). <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING: 1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement. 2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement. 3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number). 4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement. 5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement. All good? Then proceed! --> <!-- This bug tracker is monitored by Windows Terminal development team and other technical folks. **Important: When reporting BSODs or security issues, DO NOT attach memory dumps, logs, or traces to Github issues**. Instead, send dumps/traces to secure@microsoft.com, referencing this GitHub issue. If this is an application crash, please also provide a Feedback Hub submission link so we can find your diagnostic data on the backend. Use the category "Apps > Windows Terminal (Preview)" and choose "Share My Feedback" after submission to get the link. Please use this form and describe your issue, concisely but precisely, with as much detail as possible. --> # Environment ```none Windows build number: Microsoft Windows [Version 10.0.19008.1000] Windows Terminal version : 0.6.2951 Lenovo Thinkpad P1 : Intel Xeon E-2176M Hybrid Graphics with Intel P630 and Nvidia Quadro P2000 64GB RAM Any other software? ``` # Steps to reproduce Very easy to reproduce. Have the performance monitor open and bring terminal to foreground. The GPU usage spikes. I noticed this issue because, mouse becomes laggy and UI is almost unusable. I am pasting two screen shots when the terminal goes foreground and when the terminal goes background ## High GPU usage when the terminal is foreground ![terminal_highcpu](https://user-images.githubusercontent.com/808507/67729628-30434080-f9c8-11e9-90b2-2c7c830876b1.png) ## Low GPU usage when the terminal goes background ![terminal_lowcpu](https://user-images.githubusercontent.com/808507/67729634-35a08b00-f9c8-11e9-8b29-0887781578e7.png) <!-- A description of how to trigger this bug. --> # Expected behavior A relatively idle terminal should not be consuming 100% GPU and there by freezing the UI <!-- A description of what you're expecting, possibly containing screenshots or reference material. --> # Actual behavior UI lockups due to 100% GPU <!-- What's actually happening? -->
claunia added the Resolution-ExternalNeeds-Tag-FixNeeds-Attention labels 2026-01-30 23:54:28 +00:00
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Reference: starred/terminal#4698
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