I use unity3d Particle System in my game. it has no problem on android, but it performance issue on ios.

[fjut]

Hi guys，I use Particle System in my game, it performance issue on ios. but on android it will be ok.
performs well on android and unity Game preview window, like this:

performance issue on ios , like this :

Any comment would be helpful. thanks in advance !

[fjut]

The issue may cause by the NPOT textures, when I use POT textures, everything is OK.