Well, I am using Safari on a MacBook Retina, with no extensions and the lag to load the home page, as well as "Subscriptions" (i.e. list of current subscriptions) is the same as on Chrome. For me, loading the home page or subscriptions can take as long as 30 seconds. THIRTY. Posting is quick, as is navigating within a particular forum.
It seems like a Head-fi.org back-end issue, related to the display of personalized ad content. I can view head-fi on my Android phone and it loads instantly but, of course, there are no/few ads on the mobile version of the site.
Someone must be reading this... because 15 minutes later, all lag/delay is gone.