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I have an Alienware M14x (GeForce 650m with Optimus) and got Bumblebee working correctly (trying to get ready for steam for linux :)). Also I'm running Ubuntu 12.10 with Unity. I get great framerates with glxgears and sauerbraten (a game on the repositories), but when I run games like Bastion and Splice, I get pretty terrible framerate, in fact worse than my integrated intel gpu.

I have nvidia-current installed under ubuntu-x-swat/x-updates so it's driver version 310.xx. Also I forgot to add that I haven't been able to test other drivers because they seem to break glx (x can't load the glx module).

I've been troubleshooting this for days now, and I'm very nearly out of ideas. Any hints on why only some games are running so poorly with bumblebee?

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I cannot remember the links but I read not too long ago that there were optimizations made on Compiz for better handling of games in fullscreen mode. Obviously this is for Steam For Linux. This setting can be enabled in CSM. There was another one that, for the life of me, I cannot remember where... but it had to with your Nvidia card settings. It will improve the framerates. (I'm getting old. LOL!) –  Marky Nov 12 '12 at 5:19
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