How to reproduce:
1. Open the user's attached "dlss-bug.zip" project
2. Open the "DLSSTest" Scene
3. Enter Play Mode
4. Select the "Main Camera" GameObject in the Hierarchy
5. Switch between the DLSS modes

Expected result: "Ultra Performance" Mode has the most FPS and no artifacts are visible in the Game view
Actual result: "Ultra Performance" Mode has the least FPS and artifacts are visible with other modes in the Game view

Reproducible with: 12.0.0 (2021.2.0b1, 2021.2.0b9, 2022.1.0a6)
Could not test with: 2021.2.0a21 or HDRP 11.0.0 and below (DLSS was introduced in 2021.2.0b1)

Notes:
- The issue seems to be reproducible only on RTX graphics cards
- The FPS between the DLSS Modes is very inconsistent
- Artifacts in the Game view are only seen with other modes (Maximum Performance, Maximum Quality, Balanced) and with Depth of Field override enabled