IgorsLAB published Quality differences!? AMD FSR 2.0 vs. NVIDIA DLSS 2.3 in a big practical comparison with many videos part 2 A quote from the article:

After we already dealt with the topic of FSR and DLSS in terms of FPS increases last week, we want to take a look at the quality of the upscaling methods today. During my testing, I also noticed a few things that will help us clarify the variance issues related to NVIDIA graphics cards. So, it’s going to be interesting in any case, so I won’t beat around the bush, but start right away! Who has not yet watched the first part with the performance, here is the link again!

  Quality differences!? AMD FSR 2.0 vs. NVIDIA DLSS 2.3 in a big practical comparison with many videos part 2