I start the process by clicking on "Start Here", in the upper right corner of the main page. It then takes 21 seconds before the page changes to the next page, which is a listing of my trees.
I then click on the tree I want to update, and it takes 11 seconds before it goes to the Tree Information page, so I can click on "Replace Tree with New GEDCOM".
I click on that, and it takes another 10 seconds to go to the next page where I can click on "Browse" so I can choose the file in my computer that I want to upload.
At that point I upload the file and I'm done.
Now maybe that doesn't sound too terribly long. But I often update two or three or even four gedcoms in succession, and each step in each one takes the same length of time. This website wasn't nearly so slow before August 21.