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Code Helper (Renderer) Uses >100% CPU and Slows Down Editor #257068

@mohammadtetouan

Description

@mohammadtetouan

Does this issue occur when all extensions are disabled?: Yes

  • VS Code Version: 1.102 (June 2025)
  • OS Version: macOS (Intel )

🐛 Bug Description
After updating to VS Code 1.102, I'm seeing persistent high CPU usage from a process called:

css
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Code Helper (Renderer)
It consistently uses more than 100% CPU in Activity Monitor.

The editor becomes very laggy, even when no files are open or being edited.

This happens immediately after opening VS Code.

Steps to Reproduce:
Launch VS Code

Open any project (or even without a project)

Things I Tried:
✅ Launched with --disable-extensions: still happens

✅ Closed all open tabs: still happens

✅ Checked via Process Explorer: shows high CPU on renderer process

✅ Reset settings and workspace storage

❌ No extensions active that use WebViews or heavy background tasks

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