Is it same if you play in single player?

How many friends are playing with you when you play multiplayer? Do you tend to spread much across the map or do you work as a close team?

When you say "massive FPS issue" is that more like that the FPS is just low continuously when it begins to be, or is it more like that it has periodic stalls? If it's more like stalling, it could be happening when new visual resources are loaded from the hard drive when you encounter something you haven't yet seen in that map.. any chance it would be something like that?

Do you play from an SSD or from a regular hard drive? Playing from an SSD would certainly help eliminating resource load stalls, at least.

Maybe the HDD could use defragmentation? Hard to say if it can have that much difference in the end.

Anyway, RWR isn't the most CPU-friendly game out there even if the looks may let people think that. There's some serious number crunching to do in there and multiple cores aren't efficiently utilized. I'm personally surprised how little we hear about performance issues, which probably means that people are ok playing with 30 FPS or that people in general appear to have relatively new PCs.

Have you measured the actual FPS how much is it? E.g. software like FRAPS would be able to tell it by just letting it run. The game has an FPS counter somewhere in debugmode (run the game with debugmode command line parameter or add it with Steam Launch options) and hit F9.

I haven't measured FPS- would a program like fraps give me a skewed reading because of the burden of the program itself? If not I will try it.