I have had very similar experience recently, with FT becoming super slow/unusable and locking up IE11. (Windows 7)
I modified my HOSTs file and it has made the world of difference - much faster rendering of FT BA.
So it does seem somehow related to the ads.
YMMV.
I would consider support an ad-free paid version of the site
Last edited by PWOZUK; Jul 13, 2015 at 10:27 am
Reason: compliance