Radeon VII Black screen Test OCCT GPU Memory check.100% black screen problem.
driver 19.10.1 is no problem .
please QA new driver Memory test
Just to let you know you are not alone. This happens to me also.
Win 10 Pro 2004
5700XT Nitro +
Radeon Driver 20.5.1
You all need to report this issue to AMD: https://www.amd.com/en/support/contact-email-form