Yea, I’m on the same boat as you, I’m working on big a project by myself I can’t properly test my game on older devices because of this. If only Epic could help with this but I don’t think they even know what is going on. I found until now that UE 4.17 is very buggy in some areas :/. Yesterday I was shipping my game to my daily device and suddenly there was 200k shaders to compile .-. that was insane xD