Is this something related to Server hardware or software or Workplace PC?
If so try posting at AMD EPYC DISCUSSIONS (Former Server Guru) which deals with everything to do with Servers and EPYC processors: https://community.amd.com/t5/epyc-discussions/bd-p/amd-server-gurus-discussion
If it isn't Server related ignore the above info.
Also open a AMD SUPPORT TICKET from here: https://www.amd.com/en/forms/contact-us/support.html
NOTE: Since it was working fine before you updated the AMD Driver and Linux OS try using a previous AMD driver
it is possible that there might be a conflict or incompatibility issue between the AMD Linux driver and Linux OS.
Previous AMD driver for the RX 560 including Linux drivers: https://www.amd.com/en/support/downloads/previous-drivers.html/graphics/radeon-600-500-400/radeon-rx...
Latest AMD Driver and Linux driver: https://www.amd.com/en/support/downloads/previous-drivers.html/graphics/radeon-600-500-400/radeon-rx...