BehaviourUpdate standard percentages

I’m getting issues with performance in the BehaviourUpdate portion of the profiler.
I would like to know what is the normal (standard) percentage for BehaviourUpdate in the profiler for a mobile FPS game project?

There is no standards for how much resources should take Update method. You should find what part of code cause this problems and try to optimize it.

Here is a good doc, how to optimize your game: https://docs.unity3d.com/Manual/MobileOptimizationPracticalScriptingOptimizations.html

If I recall, this is the amount of time spent executing Update statements in your MonoBehaviours. So there is going to be no “standard” - it is entirely dependent on what your objects are doing.

If you have a lot of MonoBehavious, Unity has a blog post discussing some potential optimizations.