[cucubelu]

This did not help.

Also if you like to see what my lag looks like, here is a short demo: https://dl.dropbox.com/u/67498189/UnknownLag.dem

Double post

Update: It's not in game issue, looks like my laptop is dying... Every other game lags like shit now and gpu temperature is 90 C, not sure how bad it is, but cucu said it's overheating.

I recommended dusting with an air duster to see if it hasn't built up a layer of nasty dust that is causing the problems. That is some high ass temperature issues. Plus it isn't only CSS, also tested under Mafia II.