It's not just you. I browse TZ-UK using a Windows laptop and Chrome with AdBlock Plus.
I suspect it's connected with this thread: Ads/Pop up proliferation? - started on 1st April.
As you land on the forum, or move between sub-fora, watch the (pop-ups blocked) counter under the ADB icon.
AdBlock's having to work quite hard, which is what's slowing down the browsing experience.