yes, and it should be possible to adjust with the config of
heartbeat-request.expected-response-after
heartbeat-request.time-to-live
NumberOfEndHeartbeats

I see now that NumberOfEndHeartbeats is derived from other settings. I'll change that to an explicit property to make it less magic.

The StressSpec should generate nasty scenarios and detect unexpected failures and I have enabled some logging that should be enough to be able to diagnose this kind of problems.