Live Activity stale date is not accurate

Question

I have a live activity that has a countdown timer. The timer can be minutes long. If my app is suspended the countdown timer reaches zero and then starts to count up. I have set the stale date of the ActivityContent to be the same date as the countdown timer. I have code in the widget that displays if the state is stale. This code is updated about 1:45 after the stale date has occurred.

How can I make sure the UI updates right when the stale date occurs when the app is suspended?

@available(iOS 16.2, *)
struct IsStaleWidget: Widget {
    var body: some WidgetConfiguration {
        ActivityConfiguration(for: MyActivityAttributes.self) { context in
            Text("\(context.isStale ? "Is" : "Not") stale")
        } dynamicIsland: { context in
            DynamicIsland {
                DynamicIslandExpandedRegion(.center) {
                    Text("\(context.isStale ? "Is" : "Not") stale")
                }
            } compactLeading: {
                Text("\(context.isStale ? "Is" : "Not")")
            } compactTrailing: {
                Text("Stale")
            } minimal: {
                Text("\(context.isStale ? "S" : "!S")")
            }
        }
    }
}