This is basically equivalent to NVIDIA's DLSS machine learning running on Tensor Cores to "up-res" or "frame-interpolate" the extremely computationally intensiv

This is basically equivalent to NVIDIA's DLSS machine learning running on Tensor Cores to "up-res" or "frame-interpolate" the extremely computationally intensive job the traditional GPU rasterizer does to simulate a world. You could numerically render a 4k scene at 120FPS at extreme cost, or you could render a 2k scene at 60FPS, then feed that to DLSS to get a close-enough approximation of the former at enormous energy and hardware savings.