multiple camera drop fps !!

Questions & Answers
1

i just add another camera for ui.
and all ui has “UI” layers.

  1. main camera
    clear flag : skybox,
    culling mask : all except UI,
    depth : -1

  2. ui camera
    clear flag : depth only,
    culling mask : UI,
    depth : 10

fps 60 is without ui camera on iOS mobile device.
and fps 50 is with ui camera.

what am i doing wrong?
i can’t understand this situation

any help?

2

i have found the solution.

Global Fog.cs (statndard Assets/Effects/ImageEffects/Scripts/GlobalFog.cs) has been attached on main camera. this cause frame drop.
so i replace this with fog ( other settings in lighting inspector ).

no fps drop.

GlobalFog.cs is not optimized on mobile device or not for mobile.