[BUG] - MacBook Pro M4 Pro, 24GB - Claude desktop app VM (com.apple.Virtualization.VirtualMachine) running at 400% CPU - Causing system freezes ~6 times a day

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Title:
VM process running at 400% CPU causing system freezes

Body:
MacBook Pro M4 Pro, 24GB RAM, macOS

The com.apple.Virtualization.VirtualMachine process (Claude's built-in VM sandbox)
consistently runs at ~400% CPU, causing the laptop to freeze ~6 times per day.

Process details:

• PID accumulates 60+ minutes of CPU time
• Located at: ~/Library/Application Support/Claude/vm_bundles/claudevm.bundle/
• Quitting and relaunching Claude temporarily fixes it

Expected behavior: VM should not peg 4 CPU cores continuously in the background.

What Should Happen?

VM process running at 400% CPU causing system freezes

Body:
MacBook Pro M4 Pro, 24GB RAM, macOS

The com.apple.Virtualization.VirtualMachine process (Claude's built-in VM sandbox)
consistently runs at ~400% CPU, causing the laptop to freeze ~6 times per day.

Process details:

• PID accumulates 60+ minutes of CPU time
• Located at: ~/Library/Application Support/Claude/vm_bundles/claudevm.bundle/
• Quitting and relaunching Claude temporarily fixes it

Expected behavior: VM should not peg 4 CPU cores continuously in the background.

Error Messages/Logs

Steps to Reproduce

Title-
VM process running at 400% CPU causing system freezes

Body:
MacBook Pro M4 Pro, 24GB RAM, macOS

The com.apple.Virtualization.VirtualMachine process (Claude's built-in VM sandbox)
consistently runs at ~400% CPU, causing the laptop to freeze ~6 times per day.

Process details:

• PID accumulates 60+ minutes of CPU time
• Located at: ~/Library/Application Support/Claude/vm_bundles/claudevm.bundle/
• Quitting and relaunching Claude temporarily fixes it

Expected behavior: VM should not peg 4 CPU cores continuously in the background.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

latest

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_