When trying to access servers on the 14th & today, I saw the launcher behaving slower than usual. Also did not allow me to see my regular server (not official)
On looking into the server list I found the following change from yesterday. A large number of apparently Chinese origin servers operating on various outdated software. I dont know if this is the cause of the issue, but from earlier experience with these "ghost servers" (some are dead, some are alive etc), earlier this year, the same issue was occurring.
The 1.21 servers refer to a DayZ China . . . most seem to be dead, but some are alive
The 1.20.155844 servers dont have any webpage reference & seem to have one person playing on all of them