wait, you said you already tried your 22 inch before, so, i dont get it.
the only difference is the higher resolution, sure it will need a little bit more muscle, but i think the cause might be age more than anything.
besides, no offense, but your card is not built for gaming. the cheap price is your first clue, decent ones start at more than $100
Hey i said earlier i had 15inch monitor now i have 22" monitor.