For the fastest help and response I think its best to directly contact the Help Desk (click on "Help" near the top right corner of a GT page and then click on the "Submit a Request" tab). That said, a slow playing GT video or difficulties in navigating around GT are sometimes due to problems not at GT or with our ISPs but at points in between. See my post #4 here,
https://www.guitartricks.com/forum/showthread.php?t=42566
"It takes a lot of devotion and work, or maybe I should say play, because if you love it, that's what it amounts to. I haven't found any shortcuts, and I've been looking for a long time."
-- Chet Atkins