How to reproduce:
1. Open the user-supplied project
2. Enter Play Mode in the "SampleScene" Scene
3. In the Hierarchy window, select the "Renderer" GameObject
4. Navigate to the GameObject's "RT Scheduler" Script Component
5. Change the Renderer Type property to "Renderer Simple" while observing the Game view

Expected result: the text values remain constant
Actual result: the text changes values every couple of frames

Reproducible with: 2019.3.6f1, 2020.1.0b2, 2020.2.0a4
Could not test with: 2017.4, 2018.4 due to console errors

Reproduces on:
VLNQA00160 iPhone 6s iOS 13.3.1
Android devices (according to the user)
MacStandalone Player
Editor Play Mode

Notes:
1. Changing the Renderer Type property to "Renderer Simple" reproduces the issue on command; the behavior can still be observed while idling in Play Mode and watching the Game view for a minute or two.
2. Can be reproduced on multiple platforms - issue is more apparent in Player than Editor, but is reproducible both ways nonetheless.