nvidia proprietary driver 12.04

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http://askubuntu.com – I have Ubuntu 12.10 an nvidia 540M graphic card with optimis technology. If I install the nvidia current package from Software Center (and bumblebee for optimus) when I run 'optirun glxspheres' i get 120-140 frames per second. If I install the nvidia current driver from 'Additional Drivers', and run 'optirun glxspheres' i get 170-190 fps, but glxspheres and all the games I play always start full screen. And this is a problem because some games mess up my desktop resolution and I have to relog to fix it every time I exit a game. So I can't use this driver:( Also if I uninstall the driv (HowTos)