My browser doesn't display International Grandmasters' color as red. Perhaps the color has changed, or there is a problem.

Edit : It is okay now. I think my monitor displays a little bit different.

it goes up/down every five minutes. Also, when it is working, it is incredibly slow. Is everyone else facing the same problems?

Sometimes, yes.

Though "incredibly slow" is not the proper measure if you want to describe / report a trouble :)