hi all, currently building a game in unreal and have decided to start using Shader model 6.0. instead of 5.0 and learn about virtual Shadow maps.
after checking with the Unreal community, it appears to be a driver issue with AMD, a few other have managed to DDU their GPU drivers and reinstall to solve the issue. this has not been the case for me. after 22 DDU's and 2 reinstalls i still have this issue making shader model 6.0 unusable
You might want to try post your question at AMD Developer's Forum since this concerns programing. Start here first: https://community.amd.com/t5/newcomers-start-here/bd-p/newcomer-forum
According to this thread at Newcomers where the Moderator gave access to OpenGL/Vulkan Forum for the same issue. The OP mentioned a Shader Bug with AMD Driver: https://community.amd.com/t5/newcomers-start-here/issue-confirmed/m-p/552915#M2198
The link from above about the Shader Bug: https://community.amd.com/t5/opengl-vulkan/shader-buffer-access-bug/m-p/542760#M4290