forward shading (cant use taa/tsr in 5.6?)

Development Rendering
1

in 5.4.4 when i use forward shading, i can still change these options
i use TAA with forward shading for example. or MSAA. works fine.

but with 5.6 its greyed out.
(upgrade project from 5.4.4)

image
image725×104 9.95 KB

even though its not MSAA, its still using TSR with forward shading.
just cannot change it in “project settings” only ini