After finding FT nearly impossible to view, due to extremely high resource usage, with Chrome and Firefox, I decided to try the Opera browser. This is freshly installed, and the only tabs open are from FT. The results were a bit ironic...

I run Windows 7 64-bit with 8gb RAM. I do not use ad-blockers (including the one built into Opera), my philosophy is that I can deal with most ads, it's a small price to pay for a (mostly) free internet. But I have never seen any site -- and that includes clickbait garbage sites -- that immediately just run the CPU at nearly 100% and halt my computer, so quickly and consistently as FT.