How to reproduce:
1. Open the attached “IN-101040” project
2. Open the “SampleScene”
3. Make sure the Game view aspect ratio is +not+ “4K UHD (3840x2160)”
4. Enter Play mode
5. Observe the result in the Game view

Expected result: Shadows render normally
Actual result: Shadows flicker

Reproducible with: 2022.2.2f1, 2022.3.62f1, 6000.0.49f1, 6000.1.3f1, 6000.2.0b1
Not reproducible with: 2021.3.51f1, 2022.2.1f1

Reproduced on: Windows 11
Not reproduced on: No other environment tested

Notes:
- The severity of the flickering changes with each aspect ratio and does not show at all on 4K UHD (3840x2160)
- Shadows also flicker in Game view when moving around in the Scene view
- User noticed in the Frame Debugger, the DrawMotionVectors pass before ScreenSpaceShadows (only starts in later versions of 2022.3)
- In 2022.2 the texture of the terrain is not visible but the frame debugger shows similar results as previously tested versions where the texture is visible, also if you enter Play mode, a little flickering is noticable on the left where the terrain meets the sky (easiest to see if screen brightness is all the way up)
- The issue specifically happens with Screen Space Shadows and when Dynamic Resolution is disabled on the main camera output.