Reproduction steps:
1. Open the attached “IN-55509 RTX Shadows Bug 2.zip“ project
2. Open the “OutdoorsScene”
3. Select the “Terrain” GameObject in the Hierarchy
4. Focus on the “Terrain” by pressing the “F” key while hovering over the Scene view with the mouse, so the whole “Terrain” is clearly visible

Expected result: Shadows on the “Cube” GameObject are not flickering
Actual result: Shadows on the “Cube” GameObject are flickering

Reproducible with: 2021.3.31f1, 2022.3.10f1, 2023.1.16f1, 2023.2.0b12, 2023.3.0a8

Reproduced on: Windows 11 Pro (22H2)
Not reproduced on: No other environment tested

Notes:
- In the 2022.3.10f1 and newer Unity versions, the ray traced shadows are also flickering on the “Terrain” GameObject
- Reproducible in a new project
- Reproducible in Player
- Ray tracing is only supported in HDRP with the D3D12 Graphics API