hi, i have been using wasabi for over five years, never got that message.
have you contacted wasabi?
--checkers 10000 --transfers 5000
those are very high values, why did you choose those specifc values?
as a test, i would remove those flags and also add --fast-list
https://forum.rclone.org/t/fastest-way-to-check-for-changes-in-2-5-million-files/25957/17
if that does not help, when you posted, there was a template of questions for you to answer?