*Steps to reproduce:*

1. Open Build Profile window (File > Build Profiles)

2. Create a build profile and add a custom player settings (Press Customize player settings)

3. Change Shader Precision Model in Other Settings > Shader Settings

*Actual results:* 

When changing the Shader Precision Model for a build profile, it's changing globally (for all profiles and for Project Settings > Player Settings)

*Expected results:* 

The Shader Precision Model should be changed for build profile only

*Tested on (OS):* 

*Notes:*
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