Certain particle effects in ContentExamples pause when looked at on Mac with Metal

Certain particle effects in ContentExamples stop playing when looked at from a specific angle. The affected demos are 2.1, 2.4, 2.5, and 2.7

Seen on an Nvidia MacbookPro and AMD MacPro

Does not occur in OpenGL on mac
Does not occur on Windows.

1. Obtain a copy of ContentExamples
2. Open ContentExamples from the launcher
3. Open effects map
4. Play in Standalone game
5. Navigate to display 2.1 and look at it from directly in front of it

Result: Particles stop moving