I just started playing the story mode, and it is lagging like crazy in Blackgate Prison! Is anyone else having this problem? If so, how can I fix it? Thank you!

Hi I am trying to download the game on my laptop, and when I get the game client to install the page in the game window can't be found. It goes to install the game, but can't find the page for some reason. Does anybody know what the problem is, and how I can fix it? Thank you.