If you've exhausted all troubleshooting options, take the nuclear option.
Won't because this is on Apple and, specifically, 26.4 induced; while not widespread, you can find -if inclined to google it- others having the exact same issue, also post 26.4.
(for some it was a Contacts issue, specifically names and numbers on a Mac not identical to those in iCloud, for others a matter of "duplicates"; for others it was a matter of removing a Contacts-related widget, if so added; for yet others repopulating the CallHistoryDB folder. None of these apply to me, already done or checked for respectively)
Might be the next update fixes it.
If not, i'll be downgrading to 15 soon enough either way, so.. not even gonna bother re-installing Tahoe.
i'm curious so tagging what you find in the "energy tab" for activity monitor.
While it's peopled initiating all this, the real culprit in terms of consumption is CallHistorySyncHelper.
When peopled starts dragging its pixelated behind, CallHistorySyncHelper goes crazy, lowest number i've seen on the energy tab is +1.400
Kill peopled, CallHistorySyncHelper calms down instantly.
* Funny part? There's nothing to sync. Nothing. The iPhone linked to this account, aka this Macbook too, is not used for phone calls, lol. No one has the number; hasn't rung once since i got it. And yet CallHistorySyncHelper has issues.. Go figure! Again, it's something Apple introduced with this update. Ask them 🙂
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