sfcrazy (1542989) writes "Martin Gräßlin, a lead KDE developer, addresses some queries around a topic bugging Gnome and Unity users — the fallback mode. In this post he says that "having the non-composited mode around allows us to do things like turning compositing off when running games or heavy OpenGL based applications such as Blender. So if you want to get some of the now finally available games for Linux, KDE Plasma should be your primary choice to enjoy the game. I have also heard of users switching to KDE Plasma because we still provide non OpenGL based setups."
Link to Original Source