Extreeeeeeeeemely laggy!

[Kionys]

For some reason, when I try to log into Haven and Hearth on my computer, the game is extremely laggy. The background of my characters profile is white. This doesn't happen on any of my other computers! The computer that lags on HnH can run other big games, Like WoW, Maplestory, etc. Is there something wrong with my HnH files or something?