Replying to NS super slow, uses so much resources

Whenever I load newschoolers, it slows my browser down incredibly, everything becomes so slow I can hardly use it. I'm on the university network which is super fast, so that can't be the problem. It's not the loading time, but the actual resources being used when the site is displayed.

When I use Safari on my Mac.. it's unusable. On Firefox is works, but extremely slow. When I use Firefox on my brand new 3 GHz Linux machine, it's slightly better but still unusually slow and a pain in the ass to browse. I don't understand. Maybe I'm loading something wrong, if not I wish there was some sort of lite version of the site without fancy menus which I can browse smoothly. But I really can't believe this 3 GHz linux machine would be too slow to read NS :(