https://bugs.freedesktop.org/show_bug.cgi?id=92258
--- Comment #45 from Mez mezcalbert@hotmail.com --- Indeed, this works, but at the cost of a 33% decrease in performance, meaning that my discrete GPU actually renders games as well as my integrated GPU. Hence, I deactivated this option to start Steam. I'd rather have freezes (I can avoid without going into context menus) than play games in a choppy way.