Yeah, Wikipedia loads at low speeds[0] but I think they specifically design to load on low bandwidth connections.
RANT
Most sites are built for high-end dev machines running OSX and/or chrome. I’m basically the only person running windows and Linux regularly at work and test things in windows for people when they can’t reproduce it anywhere else.
The number of times I’ve informed our editorial team that they are about to publish something full of unprintable characters (that are hidden in OSX but show up as a question mark on Windows) is non-zero. The dev mono-culture is real.