[tabThumbnailTooltip.uc.js] How to decrease the delay before showing tab thumbnail?

[benzBrake]

I want to make it work smooth like vivaldi.

[aminomancer]

It should say in the prefs section in the readme. Add a new number pref in about:config, ui.tooltipDelay and set it to 100 or 50 or 0. However, the delay can't actually be 0 in practice, because it takes time to generate a thumbnail. It's like taking a screenshot of your screen and resizing it. So the minimum speed is gonna depend on your hardware. But setting the pref as low as you can should reduce the delay since that pref's default value is 300 which is really slow. That's 300 milliseconds so nearly 1/3 of a second