Wish I had a comfy seat -.-""
Anyway, I ALWAYS play on window mode (I chat minimal 3-4 people while playing + on the web too!) But I have a pretty neat computer... I've dedicated more than half a TB to Ready-boost (my dad's old hard drive + a 16 GB usb) + I have an overclocked processor and such (I put the computer together myself, so there are no factory errors!)... Sometimes it needs a little bit to render everything, but not long for me!