Is something not good enough? Tad jumpy (only sometimes) Portal 2

[MrMartyn1984]

Hi all,

Been a long time since I've ran a PC game as usually use the Xbox, however the wife watches a lot of crap on the TV so I got Portal 2 for the computer. Problem is one time it runs smooth on high quality and the next it appears a little jumpy only when walking and turning at the same time!?!?

I'm just wondering is my computer not up to it, or could something else be to blame?

Not very knowledgeable when it comes to making games work on computers anymore! LOL

system is...

AMD Phenom II 550 Black, overclocked to 3.75 (to keep active cooling working)
4GB Kingston HyperX at 800mhz
ATI Radeon HD 4600
Asus M4A78 Pro

Latest Catalyst drivers installed.

Cheers

 

[MrMartyn1984]

I've tried dropping the detail down to medium but still suffer the same problem? I'm very confused as thought my machine would run this smoothly, which it does here and there but then goes back to this stuttering when walking and turning?

I never built it to be a gaming machine so if something needs changing I'll look into it. Thought it would be consistently jumpy not here and there though?

Would a windows reinstall be a good idea or pointless?