[BUG] vscode gets unresponsive

[antebrl]

First of all: very cool project! I really like the idea.

🐛 Bug Description

When I try summarizing a larger PDF (20+ pages), it takes forever, and the VS Code window becomes unresponsive almost immediately, even though my CPU usage is only around 20%.

📋 Steps to Reproduce

It would be great if you could test this behavior and let me know if my machine is simply too weak to handle it!

1. Set up VS Code
2. Try summarizing larger PDFs with VS Code Copilot, for example: https://www.cs.dartmouth.edu/sergey/cs108/ABI/UlrichDrepper-How-To-Write-Shared-Libraries.pdf

✅ Expected Behavior

The process should take only a few seconds and run smoothly without making the VS Code window unresponsive.

❌ Actual Behavior

VS Code becomes unresponsive. I eventually have to close it. No response occurs even after several minutes.

🖥️ Environment

Package Information:

• Package name: @sylphx/pdf-reader-mcp
• Package version: 2.0.1
• Installation method: npx

System Information:

• OS: Windows 11
• Node.js version: v24

Additional Context:

• MCP Client: VS Code

🔄 Reproducibility

• Always
• Sometimes
• Rarely
• Only once

💡 Possible Solution

Any advice would be appreciated! The machine I tested on isn't very powerful.
It might also be worth trying a different IDE or Claude Code. What do you think?