I've been playing Shadowrun on my PC for a year now and only recently did the game start being buggy on me. What happens is that I'll run into a group of people, or someone will teleport onto me, and the game will just freak out. The framerate will drop to near zero for a second or two, then it will all be fine again except my character will be dead on the ground. I originally tried just turning the graphical settings down, and it didn't work. What makes this weird is that the game had never done this to me before. I thought it was possibly a problem with the processor just not having enough juice to keep up. So I overclocked it.
I have a Intel Core 2 Duo E8400 @ 3.0 Ghz. I'm also using a MSI P35 Neo mainboard. What I discovered is that overclocking with my board is easy. You just type in your desired FSB speed and it figures out the rest for you. I was innitially running at 3.6 ghz overclocked and that worked fine. I even did a 3Dmark06 benchmark and with the new settings there was significant improvement. I didn't write down the scores but it went from a 10,000 or so score to 12000. The processor was still running at around 40C, so I figured I was good.
Well, I try out Shadowrun and the game runs like butter in a bot match. So, I take it online, and after about 2 hours of playing, its obvious the problem is still there. I'm begining to think this isn't a problem with the processor. So, to make sure, I overclocked it more to 3.8 Ghz, but I haven't gotten to try it yet. My guess now is that this is a network problem. Strangely it only affects the computer though. I normally have a 360 running with someone else playing, in the same match at the same time, and that doesn't have a problem.