Deferred Technical Preview not working on DirectX 11, Shader Model 5.0 GPU.

Deffered Technical Preview greyed out and not able to toggle it on AMD Gigabyte HD 6950 OC x3 Windforce, a DirectX 11.2 GPU with Shader Model 5.0.

Deferred shading works with DirectX 12 gpus with shader model 5.1 and newer and OpenGL ES, on mobile devices.

Tried with a couple PBR packs like:

-Vanilla RTX
-Defined PBR 1.2.0
-PrizmaRTX 1.2.1
-Elys PBR v1.1.0

All of the packs worked on Android, but none on Windows PC.