Displaying user card on hover

I searched throughout the forum for a few hours and wasn’t able to find anything specifically on this topic (though it was mentioned in some threads about user cards as a suggestion.)

I understand that many are opposed to this but for some contexts in forums this makes a lot of sense - currently working on a custom theme and wondering if there’s a simple way to show user cards on hover rather than on click:


Is there any reason to believe that this will hinder performance or stress the backend in any way? If upon scrolling and these cards are pre-loaded it could send a lot of requests on the backend?

Just wondering how best to achieve this without affecting speed and overall performance of the site.

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Hover doesn’t work on any touch devices, so it generally should be avoided as a primary UX mechanism.

It’s also kind of irritating when stuff starts popping all around your mouse cursor as you move it.