Thanks for the follow up.My issue has been resolved.It turned out to be
old intermittent wiring between my nest and my heat pump causing erratic
behavior.One I replaced it, everything is back to normal.Thanks
I too have started experiencing AC compressor short cycling this summer,
around june 2022, in Phx AZ. I thought it may have been my compression
but I'm now starting to suspect my Nest :-(((