microsoft / microsoft/vscode-python-environments
Python Environments extension causes significant UI lag/freezing in VS Code
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@DonJayamanne is already working on this.
Since Jun 18, 2026.
~info-needed
- Dominant language
- TypeScript
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Description
- Open VS Code with the Python Environments extension installed and enabled
- Open any Python file or workspace
- Observe UI lag/sluggishness (delayed typing, slow panel switching, unresponsive UI)
Expected: VS Code responds normally with no noticeable delay
Actual: VS Code becomes slow/laggy — likely caused by the Python Environments extension
scanning environments or running background processes
Additional info:
- macOS (username: hilde)
- Python 3.x installed via Homebrew/system
- Lag appears consistently / after a specific action [edit to match your experience]
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Assessment
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