Wowza Thread Pool capping

Hi,

I am monitoring a live event hosted on a single Wowza Streaming Engine. We are monitoring the JVM parameters, and seeing that as the connection counts rose slowly to around 2300, the thread pool count capped at 875. The CPU usage is somewhere between 40-50%. (See attached screenshot)

Is it a possible performance bottleneck, that we should address, or this is normal effect?

Any advice or help is appreciated, thanks,

wtb