Remote Config window causes performance drop in Editor when multiple settings are added

How to reproduce:
1. Open the “IN-103868_RemoteConfigPerf“ project
2. Open the “SampleScene”
3. Enter Play Mode
4. Open Window > Remote Config
5. In the Remote Config window click “Add Setting” multiple times
6. Observe the FPS tracker in Game view

Expected result: FPS does not drop and Editor performance is stable
Actual result: FPS drops and Editor starts to lag

Reproducible with: 3.1.1 (2023.2.0a9), 4.1.1 (2022.3.64f1, 6000.0.53f1, 6000.1.11f1, 6000.2.0b9, 6000.3.0a1)

Reproducible on: macOS 15.5 (M1 Max), Windows 11 (by user)
Not reproducible on: no other environments tested

Notes:

• The performance issue occurs only when the “Remote Config” window is visible in the Editor
• The performance issue persists when not in Play Mode