In-game windows = fps drop?

[archol]

As the title suggests, having massive fps drop whenever I open Marketplace or Character Info. Guessing its something to do with them and Awesomium process which so I heard is being used by them but not really sure. I'm using an Ok laptop which runs the game on mid graphics and normally get 40 fps or so, the interesting thing is that my brother used a high end PC which runs the game on mid graphics with similar fps but he does not get any fps drop while looking at the Marketplace or Character info. Any help would be appreciated.

Thanks in advance~