Framerate drops and Camera.render is high

Hey, I’m creating a tour of the blood vessels in Unity, I used a mesh particle emitter to emit the red blood cells and other elements which flow towards the camera.
[37410-vessels+update.jpg|37410]
However every time I play or preview it the framrate drops to about 6fps and the profiler shows that that camera.render is at 98%. Any idea on what I could do to fix this and get rid of that lag?

Check the materials you are using for the mesh particles. If they are using a transparent shader (“Queue” = “Transparent”), they will have to be depth sorted during rendering which will cause the framerate to drop exponentially based on particle count. Use an opaque shader instead such as Diffuse.