What driver version do you currently have installed? Keep in mind, that the performance expected from running a Core i5 will be different from your P6100. Different graphic settings (which would be selected in game) can also have a noticeable effect on performance.
My driver version is 220.127.116.1127 which is latest. I have updated my drivers a day ago. I have also tried to use earliers versions of Intel HD graphics but no luck. Please intel help me into this. I will love you all if you will help me.