Spike on PhotonHandler.Update()

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Hello,

I get some spike when i check my profiler on PhotonHandler.Update(), can you tell me if it's normal?

The profiler screenshot imgur.com/24rjOWD
- 6 Players in a room
- I'm using Unity 5.1.3f1
- Photon version 1.51.

Have a good day.

Thank you.