Originally posted by Axy_David:

For me, multicore rendering in primus means instant crash.

Huh.... If you enable multicore rendering but have cl_showfps set to 0 do you still crash (near) instantly/? And if it doesnt crash near instantly does it crash shortly later?

I also just noticed this little note in the drivers change log:
What happens if you comment out that variable in the script? I am currently in class right now and can not try it at the moment.

EDIT: Just tried it. Commenting out that variable allows the game to run with multicore rendering enabled and appears to have a higher FPS than singlecore rendering. Can anyone confirm?

I personally see no improvement. Then again, TF2 doesn't use that much of my CPU to begin with.

I should note that in Ubuntu one can install 'indicator-cpufreq' to do the same thing but without a script. Pinned but I am not going to add it to the existing script. Too complicated and requires root.

Meh, I can play the game fine under primus and latest 310.XX drivers but only if I have it disabled, lol. As soon as I enabled them, instant crash to desktop.

I figured out why some people crash and others don't. The people that crash with 310.XX drivers and Primus have 'cl_showfps' set to enabled. No crashes with the cvar disabled but a crash is caused only a second after enabling it while in game.

Maybe try a different desktop environment and/or disable compositioning? I have nearly identical hardware (but with Kubuntu 12.10 and desktop effects disabled) and get 40-100 FPS on max settings with occasional dropping to 20FPS for an unknown reason, though it is short and still playable. Unity runs horribly on my computer, especially with games. Disabling Hyper Threading also helps a lot.

How long do the FPS drops last for? Are they only for a few second at a time or do they last throughout the fight?

Second, try disabling hyper threading and see how well it runs after:

Hello, what kind of GPU do you have? Also, have you tried running SS3 on the Intel card? It will obviously lag but I want to make sure it is not the game itself.

Hmm, could you add me on Steam? Would be easier to communicate.

I just noticed you are trying the experimental script? Have you tried using the original working script? It looks like you save the experimental script incorrectly.