I suppose that greatly limits things for a game which is also expected to run nicely on non RTX cards.
So I guess this is like “Up-scaling” or faking 4K, it is using neural network to approximate higher resolutions, I wonder how well it works on very fast moving small objects, if it is artifact prone.
Since you can’t have MSAA with deferred I suppose it wont interfere in anything deffered, but if you mean if it interferes with Deferred elements of the Forward+ Renderer then so far I haven’t come across any such issues other than the ones Forward can’t handle such as the examples I gave above, Decals, D-Buffer, Motion blur artifacting. Also you can’t enable MSAA when using Deferred anyway but you can choose to have TAA with forward.