Notification announcement being much buggier after iOS update?

Since my phone updated to iOS 27 the other day, I have noticed that Siri announcing notifications has become significantly more clunky than it used to be, with the largest issue being that when I have AirPods in and he begins to read a message as I am sent it, in the past pressing the side (power) button would cut him off (which is especially convenient when I am listening to music and it is a short message sent in a group chat with a long name that gets extremely repetitive), but now this function simply does not work half the time or takes a second or two before he stops reading out the notification. Has anyone else experienced this issue and found any way to fix it?