Microsoft Graph takes time to Answer msteams call

[SagiBN-Nice]

Describe the bug

When I perform high load testing, for some of the calls the next scenario happens:
Calls.OnIncoming is triggered -> we perform ICall.AnswerAsync() -> finished after more than 5 seconds (ICall.AnswerAsync() happens right after the log "mediaSession is created" that can be seen in the image. The log "Bot answered the call 'CallId'" happens right after ICall.AnswerAsync()).

this leading to some errors because after 5 seconds with no answer, we receive 'deleted' on that callId and then receive new 'created' with different callId.

Expected behavior

For most of the calls:
Calls.OnIncoming is triggered -> we perform ICall.AnswerAsync() -> finished after 1 second or less

How to reproduce

Perform high load testing with Microsoft API's online meeting with 1 call per second.
It happened in like 50 calls within 10 hours out of 36,000 calls.

SDK Version

5.38.0

Latest version known to work for scenario above?

No response

Known Workarounds

No response

Debug output

Click to expand log

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### Configuration

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### Other information

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