Is there a way to control the speed on which the acronym's full version is displayed while hovering over one?
On my forum it takes 1 to 2 seconds hovering to reveal the acronym's full version, can this be changed to instant?

You can add attribute data-ipstooltip so this titles will be handled by IPS tooltips instead of browser's native. 

<acronym title="eXtended Visualization Mod" data-ipstooltip>XVM</acronym>

Don't forget also add "data-ipstooltip" to allowed controllers list in ACP > Customization > Editor Settings > Advanced.

• Customization

Thanks, that kind of works.
The only thing is, it seems that while hovering over it, the markup (dashed bottom-border in my case) disappears.
Plus, I can't seem to find where in which template the <abbr> tag is called.