I think that this can vary quite a bit. My simple GitHub page loads in roughly 1 second. I don't think it's ever taken as long as 5 seconds.
The linked site loads in less than half a second, but it costs $5 a month just for a simple page.
The linked site loads in less than half a second, but it costs $5 a month just for a simple page.
But I noticed that my DNS zone is quite different to how Github now tell you to do it (I have an A record to 204.232.175.78). So perhaps that is a factor.
That being said, I notice times similar to another commenter above, around 1-2s usually. I don't think I've seen a five second load time.