Option for not rendering in Gutenberg editor

I’m using this great TOC for my technical articles (posts).

When editing a longer post in Gutenberg editor, the block keeps rendering all the time, making the edit experience quite laggy and annoying. The page content also keeps jumping around vertically.

It would be a great improvement to have a toggle “Don’t render in Gutenberg” either in the existing “Advanced Features” meta box of the block, or as a global setting in Settings > SimpleTOC.

The page I need help with: [log in to see the link]

 

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