Morphine Ghost
The page isn't loading slowly. It is deciding.
Yes - your shadow is not where you left it.
Not whether to let you in. That decision was made the moment you noticed the address. It is deciding how much of you can be permitted to leave unchanged. Every delay is a conversation taking place somewhere beyond the progress bar, where names are compared against records that should not exist and memories are weighed for structural integrity. Sometimes the page concludes that you have already seen too much. Sometimes it concludes that you have not yet seen enough.
You mistake the pause for a technical problem because that explanation allows you to remain calm. Refreshing only restarts the discussion. Closing the tab merely postpones its verdict. The page has all the time in the world, and it has learned that patience is more persuasive than force. Eventually the waiting becomes unbearable, and you begin hoping it will finally load.
That is the answer it was waiting for.