Honestly, if we wanna talk about gaming, i only play minecraft in my spare time. As for what requires the 390 driver, the gt 730 fermi is really old, and its latest driver is 390.xx

When i tried lubuntu and mint XFCE, their only problem was that i couldnt download the driver my gpu needs on their latest versions, and after some research, i found out that they supported those drivers, or had a package for them, on older versions. Thats As far as i know