I never thought that one day I could ask such a thing to a software vendor, but please, Unity, slowdown! Here is what it feels like when using Unity 5 : Each 5.X update is like the Doc's colored logs exploding in the locomotive. It goes faster but the locomotive falls apart. I'm using Unity since version 1.6 and it has always felt stable and under control. But, since Unity 5, I have the feeling that the software is going crazy. I'm always walking on eggs, going around bugs and inconsistencies, dealing with features going on and off or with complete changing behavior, being disappointed by major features with poor implementation (like GI) and for the first time I'm really scared as my current project can't follow Unity's development because of a broken feature! So please Unity, slow down your development process and take some time for stabilization because it's much much needed, or your locomotive will fall in the ravine!