How to solve the number of game frame decreased when we use Particles / Additive texture mapping?

Questions & Answers
1

The game engine:unity3D

The number of game frame decreased significantly, when we use Particles / Additive texture mapping and the tga format picture with Plane model which has the channel and alpha in the scene.

PS: We use the version: 3.5.0 and the Ellipsoid Particle Emitter of the Legacy Particles with ios target platform.

2

You should try to avoid overdraw and transparency as much as possible, so use fewer/smaller particles.