Hm, that's strange. This is a newer computer, only about a year old, and the internet isn't that slow usually. But as soon as I put the picture on, other gifs on the page lagged out, for example Reggie's avatar stopped on one frame. Oh well, as long as it's not a problem with anyone else it's fine.
Wait a minute, maybe it's the holiday theme with all the snow effects. I just changed it and it's fine now. Although now I'm going to change it back anyway.