Siri has started to lag on HomePod
Siri on HomePod worked brilliantly for me for a long time, but recently there's a lag: almost every time I ask Siri to do something, she says "Just a sec" or "One moment" before completing it shortly thereafter. I have checked my download speed using Speedtest, and it's fine. I've restarted HomePod and the issue persists. I don't recall whether this problem was coincident with the iOS 13 release. Any ideas?
My HomePod is currently running iOS 13.2.1.
HomePod, iOS 13