Heartbeat timeout issue

iOS v10.2.1
Particle Electron
Hologram Sim
Blynk Library v0.5.1
Blynk App v2.18.0

I am testing my project and am experiencing heartbeat timeouts on a fairly regular basis (see below). I am using #define BLYNK_HEARTBEAT 300 in my code and that has not changed for quite some time. Prior to the latest library update using this heartbeat interval was working fine. I have only noticed this issue this morning The only changes I am making to my code as I progress is to add additional slave nodes. I can of course adjust my heartbeat but something has changed to cause this issue. Perhaps it is related to issues @Dmitriy pointed out in this post?

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What ping to blynk-cloud.com shows?

@Dmitriy here are the ping results
Thank you

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