ASUS i5 2500k on ASUS P8z68 Deluxe and FIFA 14

[nagamayasi]

Sory my bad english.

My PC Spec:

i5 2500k
ASUS P8z68 Deluxe
GTX 760 2gb
RAM CORSAIR (2x4gb) CMZ8GX3M2A1866C9
PSU 750w
controller logitech f310 ,f510, f710, xbox 360 gamepad

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anyone help me, when I play games fifa 14, feels the movement of heavy players, yes indeed heavier than fifa 14 fifa 13, but on my PC even tougher. and my players are very stupid behavior. This is very different from when I compare with playing on PC dualcore Asus P5KPL am se, so easy to move the player.
then I tried to change the bios settings, change the active core processors from all cores to 2. and as a result I try to play again fifa 14 player movement becomes easier and responsive. but still lost when I connect my controller to asus P5KPL am se. why like this? can anybody explain?.
* 1. whether this was due to corsair CMZ8GX3M2A1866C9 RAM memory does not match the i5 2500K and Asus P8Z68 Deluxe? (I think like this because it is not in the list CMZ8GX3M2A1866C9 P8Z68 DELUXE DRAM QVL.)

[HiVizMan]

I would say you have a problem in your OS. Is your operating system new for this motherboard or is it a old one that has been on other motherboards.

[nagamayasi]

HiVizMan wrote:
I would say you have a problem in your OS. Is your operating system new for this motherboard or is it a old one that has been on other motherboards.

i use same os win 7 64 bit on asus p8z68 deluxe and asus p5kpl am se, and i use same controller and same psu or grafic card.
but in asus motherboard P5KPL am se, fifa 14 easier to play. (more precise movements of the player) I really do not understand, but Asus P8Z68 Deluxe's much better sophisticated than "asus P5KPL am se".
Asus P8Z68 deluxe whether the product is the product fails?
whether the ram that I use does not fit with my motherboard?
I asked this forum overcloker hope can help me.
I can also clicking overclok i5 2500K + Asus P8Z68 delux to 4.5GHz. but why can overclok as high but can not play fifa 14 comfortably.

[HiVizMan]

The OS needs to be a new fresh install. Please try that.

[nagamayasi]

HiVizMan wrote:
The OS needs to be a new fresh install. Please try that.

ok i will try. thanks