Extension causes high cpu load

[raphaelobene]

• Issue Type: Performance
• Extension Name: vscode-duplicate
• Extension Version: 1.2.1
• OS Version: Windows_NT x64 10.0.18362
• VSCode version: 1.47.3

⚠️ Make sure to attach this file from your home-directory:
⚠️C:\Users\raphaelobene\mrmlnc.vscode-duplicate-unresponsive.cpuprofile.txt

Find more details here: https://github.com/microsoft/vscode/wiki/Explain-extension-causes-high-cpu-load