Yes, I disagree that DX12 is causing these issues.
I believe the way P3D implemented DX12 is causing those issues.
Blaming DX12 for excessive Vram usage due to P3D not using any type of memory management, optimisation or tools to tell people what their VRAM Budget is, is like blaming a CPU for overheating without applying cooling to it.
Plus mostly everyone is bound by poor CPU performance, I’d be more than happy to be bound by GPU Performance as at least we can tune down our graphics settings and get a acceptable frame rate.