OnTriggerEnter2D slow on the first time called?

I have an issue in my game that the first time call OnTriggerEnter2D cause a spike in Profiler and delay game about half secs. The next call OnTriggerEnter2D works fine after all. Have anyone addressed this issue before?

Is there anyone ? :-s

What is going on inside your OnTriggerEnter2D()? You're probably initializing something in there?