Reproduction steps:

# Open the user attached project
# Open the “MainScene” scene
# Enter Play mode
# In the Game view, in the top right corner press “Stats”
# Observe FPS
# Exit Play mode
# Go to Edit → Search all
# Enter Play mode
# Observe the FPS in the Game view

Expected result: depending on the system FPS stays at around the 300 mark
Actual result: FPS is unstable and stays around the 15-20 mark

Reproducible with: 13.1.8 (2022.1.0f1)
Not reproducible with: 12.1.7 (2021.3.8f1), 13.1.8 (2022.1.0b16, 2022.1.1f1, 2022.1.12f1), 14.0.3 (2022.2.0b4), 15.0.0 (2023.1.0a4)
Could not test with: 10.10.0 (2020.3.37f1) (“Search all” window is not introduced)

Reproduced on: Windows 10

Note: reproduces only on URP