Good performance is critical specially for mobile devices.To give you some important techniques and info about making better performance we made this guide.


First start it with draw call.

What is draw calls and how to reduce them?

Draw call is a material in an object drawn to screen/gameplay. for example an object with 1 material = 1 draw call and an object with 9 materials = 9 draw calls, camera, lights, shadows, sky and so on

To reduce draw calls Unity can easily combine many objects at runtime plus draws them along with a single draw call. This process is called “batching”. The more objects Unity can batch with each other, the better rendering performance you can get.




Below is an example of batching. A scene with lots of objects having only 3 draw calls.

Things to keep in mind:


• You should have the total number of materials as low as possible. This will make it easier for Unity to batch objects.
• Check the size of the textures./It depends what your target platform is. check out the list.
• Try to keep under 8k tris for mobile devices.
• Maintain 20 to 30 draw calls.
• Use compressed texture formats when possible, otherwise prefer 16bit textures over 32bit.
• Set non movable object to static batching.
  
  
  

• For movable objects like car, enemies etc. in order to optimizing the overall performance of game characters is dynamic batching
  
  

Optimizing Mobile Games in Unity is not yet easy the next thing is Audio.
"As with Meshes or Textures, the workflow for Audio File assets is designed to be smooth and trouble free."
Audio can be Native or Compressed. Unity supports most common formats.

Supported Formats and compression