I think we are talking past each other.
These technologies do a lot of offline preprocessing in order to speed up in game rendering.
Perhaps the NVIDIA write up is the most clear from the various vendors:
https://www.nvidia.com/en-us/geforce/technologies/dlss/
DLSS uses the power of NVIDIA’s supercomputers to train and improve its AI model. The updated models are delivered to your GeForce RTX PC through Game Ready Drivers. Tensor Cores then use their teraflops of dedicated AI horsepower to run the DLSS AI network in real-time. This means you get the power of the DLSS supercomputer network to help you boost performance and resolution.
I think this is similar to AMD FRS. I am more sure it is the same as Intel XESS.
Alan