recently just installed 16.04, from 14.04 - did a fresh install - erased Hard drive. Everything went fine except now I get a drop of FPS from playing games, specially on steam. In fact, the reason why I switched to 16.04 from 14.04 was that thought that 16.04 had a better handle on FPS. It wasn't doing that before on 14.04. Games thru wine and steam were working fine (14.04) and I was getting 30 Fps, not sure if it's the new kernel. Using Nvidia proprietary drives 340 and Nvidia 710M. If there's any configuration you guys can suggets that would be highly appreciated. I red the forum first on any possible problem with Nvidia on 16.04. All of them was about it not working, well mine's working, it's just not working like it used to. Thanks!
Ubuntu 16.04 has a lot of problem with video driver with Linux kernel 4.4.0. I suggest you to install Linux kernel 4.6.0 with this guide. In my case my nVidia started to work much better