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Extremely sluggish behavior when in full screen on a 4K monitor #4908

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opened 2026-01-30 23:59:57 +00:00 by claunia · 0 comments
claunia commented 2026-01-30 23:59:57 +00:00
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Originally created by @basavyr on GitHub (Nov 11, 2019).

Environment

Windows build number:
Platform      Version               VersionString
Win32NT     10.0.18362.0        Microsoft Windows NT 10.0.18362.0
Windows Terminal version: Version: 0.6.2951.0

Steps to reproduce

Make the Windows Terminal go full-screen on a 4K monitor.

Expected behavior

Fast and responsive (like it performs in non-full screen mode).

Actual behavior

Super slow and sluggish behavior. There is at least a 2s delay for typing and using ls for example will result in a slow animation for listing the content in a directory. The Terminal is pretty much unusable if I go full-screen

I have a laptop with a 1080p display and I also have an external monitor connected via mini-display port. Monitor is 4K native 60 Hz, and it works without any issues. My laptop has also a dedicated GPU (nVidia GTX850m with the latest drivers). All other apps (i.e. Spotify, Microsoft Edge, Word etc) perform just fine when in full-screen on this 4K display. However, the Windows Terminal performs super slow when I go full screen on the monitor.
Terminal performs fine when I put it in full-screen on the laptop's main display.

Originally created by @basavyr on GitHub (Nov 11, 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: Platform Version VersionString Win32NT 10.0.18362.0 Microsoft Windows NT 10.0.18362.0 Windows Terminal version: Version: 0.6.2951.0 ``` # Steps to reproduce <!-- A description of how to trigger this bug. --> Make the Windows Terminal go full-screen on a 4K monitor. # Expected behavior Fast and responsive (like it performs in non-full screen mode). <!-- A description of what you're expecting, possibly containing screenshots or reference material. --> # Actual behavior Super slow and sluggish behavior. There is at least a 2s delay for typing and using `ls` for example will result in a slow animation for listing the content in a directory. The Terminal is pretty much unusable if I go full-screen <!-- What's actually happening? --> I have a laptop with a 1080p display and I also have an external monitor connected via mini-display port. Monitor is 4K native 60 Hz, and it works without any issues. My laptop has also a dedicated GPU (nVidia GTX850m with the latest drivers). All other apps (i.e. Spotify, Microsoft Edge, Word etc) perform just fine when in full-screen on this 4K display. However, the Windows Terminal performs super slow when I go full screen on the monitor. Terminal performs fine when I put it in full-screen on the laptop's main display.
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Reference: starred/terminal#4908
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