[AHTERIX5000]

NVIDIA has at least 3 abstraction layers such as this and neither NRI or NVRHI seem to have issues with AMD cards. I wouldn't be surprised if one of the libraries or specific versions have problems with AMD cards, it happens during development.

Most engines I've worked do have abstraction layer for gfx APIs, usually you don't have 3 different API specific implementation for all render passes. Abstraction layers (such as NVRHI) do allow taking manual control when needed though.