It depends if i use walker or not. Usualy w/o walker i play with 3~4 windows on (main acc, prp, se, bh) At first it was quite hard to handle them all, but in time i got used to it. When i use walker, i turn on full party (bd,se,prp,sws,th,th,he,bh,ee) Of course it always crashes if i accedently turn more than 4 windows..