CPU count on task manager

[RazerzCF]

Hi there.
Well basically, an extremely simple game, no graphics; it's virtually just like a mini-clip game, is using a high CPU count in my task manager (ranging from 9-12). The game lags, which it certainly shouldn't, and this happens with all the games I play. When I log off then back on; my system if fine and I can play games, apart from the screen flickers from pitch black to back on.
My best guess is a power issue, all temperatures are fine, GPU and CPU.
I'm running a 240W PSU.

BIOS: BIOS Date: 02/01/13 11:07:16 Ver: 04.06.05
Processor: Intel(R) Core(TM) i3-3240 CPU @ 3.40GHz (4 CPUs), ~3.4GHz
Memory: 8192MB RAM
Card name: NVIDIA GeForce GT 630
Manufacturer: NVIDIA
Chip type: GeForce GT 630
DAC type: Integrated RAMDAC
Display Memory: 4051 MB
Dedicated Memory: 979 MB
Shared Memory: 3071 MB
Tell me what you think.
Here's what I mean by high CPU count:
http://gyazo.com/6e2fa676b7701317958b0bf1c6b15b52

 

[Max_B]

your psu is enough but is a quality psu ? or is a old psu ? year after year the psu quality signal degrades .....
the game is simple but what is the task who use cpu time ?
use task manager and resource monitor to find it .......... is the simple game ? or else ? a malware ? a virus ? a window process ?

 

[RazerzCF]

It's just the game and chrome and the game with the high CPU count when my computer has its lag period before I restart it.