Reproduction steps:
1. Open user's attached project in "crest test.zip"
2. Open "klaus test" Scene
3. Objects under "Floaties" GameObject will be activated between short intervals upon Playing the Game
4. Build for iOS (make sure only "klaus test" Scene is included)
5. Deploy the project to the iOS device
6. Inspect the Game and the Xcode Debugger

Expected result: the Application functions the same regardless of the number of "Floaty" GameObjects activated
Actual result: after ~7 "Floaties" will be activated GPU errors will be thrown and Application will freeze/hang

Reproducible with: 2019.3.15f1 (URP 7.3.1), 2020.1.0b10, 2020.2.0a11 (URP 8.1.0)
Could not test with: 2018.4 because of errors in the Unity project

This issue is exclusive to Metal graphics API and does not reproduce with Open GL ES 2 or 3

Devices used for testing:
Reproducible with:
VLNQA00310 iPad Pro 12.9 (iOS 13.4.1)
VLNQA00234 iPad Air 2 (iOS 11.0.3)
VLNQA00241 iPhone 8 Plus (iOS 12.0)
VLNQA00 iPhone XR (iOS 13.4.1)
iPad 7th gen (13.2.2)
iPhone 7 (12.3.1)

Note: Xcode Debugger errors are attached in the Edits (look for "Errors")