Stuttering problems in games

[BUDGET_NOOBIE]

I'm having problems playing games ever since I got a 1050 Ti. Games stutter a lot. Note that the fps is high and the game suddenly lags for a second every 3-5 seconds. So some years back my Geforce 8400 GS burned out. And just a month earlier I bought a 1050 Ti. I had been out of gaming for a while and now I'm rebuilding my PC. I thought the problem was with the psu and bought an Antec VP550 P. But after trying it out minutes ago the problem is still the same. I wonder what it is. Please help. Specs(censored af):

Antec VP550P 550w Power Supply

Inno3D GTX 1050 Ti

Pentium Dual Core 2.5 ghz processor

Gigabyte G31-m S2L motherboard

4 GB ddr2 ram

 

[jamesdarsl575]

What games are you trying to play? A pentium at 2.5ghz won't be ableto do much, even with a gtx 1050 ti. And 4GB ram isn't much.

 

[BUDGET_NOOBIE]

What games are you trying to play? A pentium at 2.5ghz won't be ableto do much, even with a gtx 1050 ti. And 4GB ram isn't much.

I'm trying to run games within it's range. Here:
CODBO - massive stuttering, stutters every second, low settings

NBA 2k13 - less but still stutters every 5 seconds, med settings

DiRT 2 - even less stuttering, med settings

So after this, I tried playing something really old and experienced no stuttering while playing IGI 2.

Also, my computer receives power from a power strip connected to another power strip which is connected to a wall outlet. Does this effect this because I think it does.

Wall Outlet--->Power Strip---->Power Strip----->PC(no ups, should I get one?)

 

[jamesdarsl575]

My PC is running off a power strip going through a passthrough powerline adaptor, so that probably isn't the cause. Did your old geforce 8400 stutter at all? And did you play the same games you are having problems with now?

 

[BUDGET_NOOBIE]

My 8400 gs didn't stutter at games it COULD run. It couldn't run dirt 2, black ops lagged heavily but I remember playing 2k13 at lowest settings without any problems. Could it be the processor? And yeah, this was unexpected but currently Spintires runs flawlessly.

 

[BUDGET_NOOBIE]

And so does ets2. I don't know how but at med to high settings it doesn't stutter a bit