Unity Slow performance on iPhone 6 Plus

Question

Unity 5.1.2 iOS 8.4

Ive noticed massive performance issues with iPhone 6 Plus

Tested on iPhones 4s, 5, 6 performance looks about that Running solid 60 FPS

On iPhone 6 Plus however performance is going down to about 22 FPS for some reason. Unity profiler simply shows longer time to render. Here is the log for iPhone 6 Plus

Notice average frame time is higher and max frame time is doubled that iPhone 4s?

Im wondering if this is just me or the Unity bug, probably with Metal?

Answer 1

I have had this issue before, the iPhone 6 plus will use the metal graphics library by default. Unfortunately this is very buggy at the moment and actually slows everything down! Go to your player settings/Other settings and untick "Automatic Graphics API" and choose OpenGLES2, this is the most stable library at the moment.