Higher "last contact" time in v0.21.1

Since the upgrade to v0.21.1, it looks like the last contact time tends to grow higher than it used to (30min history):


On v0.20.1, I feel like this value was rarely over 10 seconds and now it’s growing to over 3 minutes on a regular basis. Is this an issue introduced by the update, or is it some kind of optimization that I shouldn’t worry about?

I’m seeing this same trend on both of my nodes (different networks).

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