Counter-strike source runs fine.
Let me explain more in-depth about this "lag spike" considering its a very broad term...
I'll be playing Counter-strike 1.6 and out of nowhere the game freezes for slightly under 1 second at random locations in the game, at random intervals usually around 20-45 seconds. The framerate is capped at 100 and my pc maintains it with ease 99.9% of the time lol.
I noticed my net-graph in the game will show my ping dropping from 130 back to its usual 50 quickly as this lag spike ends its self. which leads me to believe that during this system freeze thing it's not only the game thats freezing, it could be more components that are effected like my network card.
This is not an internet lag spike just to clarify, it's local lag as some call it. I'm very familiar with the net lag in cs.
This started happening after I upgraded my motherboard (ASUS M2N32 Deluxe WIFI edition) and reformatted my computer. I also replaced my old ram with 2 1Gig sticks of Patriot Low CAS latency sticks if its any consolation...
I've already tried:
virus scanning with AVG
updated dx9.0c again
changing settings in Nvidia control panel (Forceware 169.21)
re-installing the game
defragmenting game cache, verifying integrity of game files
tried reading the windows event log but didnt find anything related yet
tried posting on steam users forums (no help at all)
ran game on low-priority
...theres probably more things i've tried already
any help would be greatly appreciated!