Topic on Extension talk:SyntaxHighlight

You may be interested in the following. An assistive technologies trainer put Grammarly on my laptop, and I've just gone to edit the Wikipedia article for Quaaludes and the highlighting flickers, almost to the point of becoming unusable. Any chance some research could be done?

Grammarly has nothing to do with the SyntaxHighlight extension, it's a browser plug-in that adds highlights to text as you edit, and it's both slow (as you've found) and known to be incompatible with several wiki tools. I'd recommend that you don't use it, sorry.