Extension causes high cpu load

[Neven47]

• Issue Type: Performance
• Extension Name: vscode-gutter-preview
• Extension Version: 0.17.5
• OS Version: Darwin x64 18.2.0
• VSCode version: 1.31.1

:warning: Make sure to attach this file from your home-directory: /Users/neven/kisstkondoros.vscode-gutter-preview-unresponsive.cpuprofile.txt :warning:

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

[Neven47]

Could not get the output. Why?