So... I’ve traced my performance issue down to the way I’m updating my main SwiftUI lists in response to incoming NSPersistentStoreRemoteChange #CoreData notifications from iCloud. I was processing them on a background context, then sending notifications observed by lists. If they displayed types that were updated they’d refresh.
Clearly I was not doing this well because the view-side-subscription-and-refresh part could cause multi-second UI pauses. Obv not great.
Advice welcome. #iOSDev
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