https://wccftech.com/nvidia-dlss-2-0-behind-the-scenes-how-the-magic-happens/

NVIDIA announced DLSS 2.0 with much fanfare in late March, showcasing the revamped deep learning based image reconstruction technology in games like Control and MechWarrior 5: Mercenaries.

The first implementation of Deep Learning Super Sampling had relatively mixed results. While there were some good implementations, such as Control itself which previously used a CUDA-based version of DLSS, plenty of others had issues and introduced blurriness for example.