What is AEAD Decrypt error related to?

Question

openvpn

Good day. The question has arisen, what is the reason for spam with this in the openvpn client log?

Sun Mar 27 22:19:10 2022 AEAD Decrypt error: bad packet ID (may be a replay): [ #584132 ] -- see the man page entry for --no-replay and --replay-window for more info or silence this warning with --mute-replay-warnings
Sun Mar 27 22:19:10 2022 AEAD Decrypt error: bad packet ID (may be a replay): [ #584133 ] -- see the man page entry for --no-replay and --replay-window for more info or silence this warning with --mute-replay-warnings
Sun Mar 27 22:19:10 2022 AEAD Decrypt error: bad packet ID (may be a replay): [ #584134 ] -- see the man page entry for --no-replay and --replay-window for more info or silence this warning with --mute-replay-warnings

I read somewhere that there are problems with MTU and MSS, but googling said that you don’t need to turn them into openvpn with a specialist.
It does not always occur, if you poke mssfix down from the default 1450, then the error disappears from the client and appears on the server