Reproduction steps:

1. Open the attached project
2. Open the “/Assets/Cubes/Cubes.unity” Scene
3. Change the Build Platform to MacOS (File > Build Settings > Windows, Mac, Linux)
4. Press the “Switch Platform” button and then the “Build And Run” button
5. Observe the FPS counter in the Player
6. Exit the Player and change the Build Platform to Dedicated Server (File > Build Settings > Dedicated Server)
7. Press the “Switch Platform” button and then the “Build And Run” button
8. Observe the FPS counter in the Dedicated Server’s Console

Expected result: Performance between the different Build Platforms is the same
Actual result: Dedicated Server Build is performing a lot worse than the MacOS Build

Reproducible with: 2021.3.7f1, 2022.1.12f1, 2022.2.0b3, 2023.1.0a4
Could not test with: 2020.3.37f1 - Mac Dedicated Server Build Support module is not available

Reproducible on: M1 MacOS 12.4 (21F79)
Not reproducible on: Windows 10 (21H2), Intel MacOS 12.4

Note: This issue is reproducible on both the Apple Silicon and Intel Editors using the M1 Mac