Are any other iPhone users finding that face ID is particularly bad all of a sudden

[simon@procrastodon.net]

Are any other iPhone users finding that face ID is particularly bad all of a sudden?
Mine fails more often now, and sometimes it only takes one failure before the passcode prompt comes up.
Sometimes I get a success sound as though the phone recognized my face, but the passcode prompt still comes up.
I know not everyone has a high success rate with face ID for various reasons, but it was pretty good for me until only a couple of weeks ago.