I don't know how to describe it more specifically but recently Flyertalk forums has been breaking down, as when you click it somehow disconnects from the internet (eg on Chrome FT has this thought bubble icon and it disappears and the default globe icon shows, and then hopefully it comes back, which means the page did load). But sometimes it doesn't come back and the page simply didn't load.
No other website has this issue so there is no issue with my connection. I do note there are other websites the page often loads "criteo.net"?
It takes at least 5 seconds for a page to load with all these "new features".

lots of other stuff that you can see loading, just looking at the browser:
adnxs.com
casalmedia.com
googlesyndication.com
promarket.com

That literally takes seconds.