My computer plays KO in vista with no lag and some 20-25% cpu and memory being used, but when ventrilo is being used at the same time - it tends to be ok for 20-30 minutes and after that it gradually degrades to a realllllly laggy experience. The memory and cpu usage stays the same, still alot free - but even when I closed down KO it stays the laggy, all sounds are scratching and even draggin a window gives me continuos lag. Basically I think its some sound drivers interface within ventrilo doing something really stupid, but I've tried some different vent settings and cant seem to get rid of it. Anyone with same/similar problems solved it?
Another thing is KO randomly crashes when I have SLI enabled on my graphics cards. I downloaded some hotfixes from nvidia, but nothing seemed to cure it. Atm its no problem just disabling SLI but some day I would wanna enable it for something else I'm sure of. The cards are 2 geforce 8600 GTS, if it matters (I'd believe the SLI drivers and interface are rather similar among models).