Suddenly stuttering/low fps for all games on my desktop

The pass few weeks i have no problem with my computer fps on gaming. Recently my when i start up my computer and launch GTA V and play for 5 minutes it suddenly stutter and low fps. The problem did not solve even when i change my game to Star Wars Battlefront.

This fix only whenever i reinstall my Nvidia Driver from Nvidia Geforce Experience and its run smoothly afterwards. Whenever i start up my computer it still happen unless i reinstall Nvidia Driver.

First, i thought it was due to cpu high temp. Before, i use stock cooler by intel when i run GTA V its hit 80 - 98 Degree Celsius. Therefore, i install a new CPU cooler to reduce the cpu temp. However it does not fix the problem. There is still stuttering and low fsp.

I use RealTemp to track my temp. And i also use HitmanPro to scan through my pc for any virus/malware. it does not solve the problem. the only way to solve the problem is to reinstall Nvidia Driver after i start up my computer everytime.

My computer specs:
-Windows 8.1 Pro 64bits
-Processor: i7-4790K CPU @ 4.0GHz, 4 Cores
-Memory: Kingston HyperX Savage 16GB Ram Dual Channel
-Motherboard: Asus Maximus VII Hero
-CPU Cooler: Corsair H80i V2 (Recently Install)
-Graphic Card: Gigabyte GTX 970 G-1 Gaming
-Powersupply: FSP Aurum CM Gold 750 W

 

My CPU running 40-67 deg C after i install Corsair H80i v2.

Yes. I always start my computer i need to reinstall nvidia driver in order to fix the problem. Once i reinstall nvidia driver work smoothly throughout the day unless i restart my computer. I have a yellow mark on SM Bus controller.

 

There is no yellow mark regarding about the nvidia driver. Before the problem occur, i have update the nvidia driver through nvidia geforce experience. I start up my GTA V/Star Wara Battlefront after 5minutes it start to stuttering and low fps. Therefore i conclude it must be i updated the driver. But when i reinstall the nvidia driver it fix the problem. However, next day i start up my computer and i launch the game and the problem persist unless i reinstall the nvidia driver.

 

Hi.
Download and run theIntel® Chipset Software Installation Utilityso Windows* properly recognizes the SMBus controller.

What color slot have you the GPU card in? (Red or gray)

 

Thank you for fixing the SM Bus controller but the problem is not fix. My GPU card is in the red slot on the first one.

 

Good you have fixed the SM Bus controller issue.

Not sure why you are losing Nvidia drivers on reboot.
Have to research further.

I am running Intel on this machine, and I lose Webcam Drivers every reboot.
I haven't found the answer as yet. Very strange.

 

I have reformat my computer and it fix the problem no more stuttering and low fps on GTA V/Star Wars Battlefront. Hope i won't be encounter this problem again in the future. Thank you for you guys for helping me to fix the unsolve problem. I hope there is solution to help someone who have the same issue.

 

Now device manager look good, no marks.