Ok.

love it! now there is not going to have more slowness or lag

good

If this slows down your web browsing, then it's mainly because you already have an Ad Blocker Extension. Remove the Ad Blocker Extension you have and re-install this one.

Gets the Job done - Block unwanted ads

This extension reduces the speed of the web, and the test shows that the Speedometer2 invented by Apple has reduced by at least 10 points.