1. Open a long page such as https://ja.wikipedia.org/wiki/Animelo_Summer_Live 2. When it opens, the page is freezing and you can't click any link until 10s later if not longer. The cause of this is the web clipper extension, apparently its JS script is very recourse consuming on any large web page: It's not a problem before. I don't have ANY other extension and tested with a clean profile.