IOS 11 Freezes When Generating Particles Using SphereMask

When playing a particle using SphereMask, iOS 11 device terminal freezes.This issue is not a crash, it's screen freeze.

Reproduced device

• iphoneX :iOS 11.4.1
• iphone7 :iOS 11.4.1

Not reproduced device
- iphone7+ :iOS 12.1

• iphoneX :iOS 12.1

There is a log in the attached project. The timing when the button is pressed is where "XXXXXXXXXXXXXXXXXTESTXXXXXXXXXXXXXXXXXXXX" is output

1. Open Attached Project
2. Launch it on iOS 11 device
3. Push Button 1
4. Freeze

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