I used to own an HP elitebook 8540p with an i7 620m and a nvidia 5100m, i now bought an elitebook 8460p with i5 2540m and amd 6470m, the thing is, although this card has more shader cores, faster core speed, but slower memory, it performs WAY awful than i expected, league of legends used to run at 120fps on medium to max settings, now it barely run at 50fps on this *equal to better* system, and i cannot figure out why, i tried gta v, it runs smoother, 30 stable fps, better than the nvidia, but league of legendes, even overclocking the card to 850mhz core clock and memory to 1100mhz, it still runs way slower, i cannot figure out why, are AMD cards just this bad? are the drivers just so awful? please help