How can I ensure Audits are fully turned off for performance reasons

Document ID : KB000092841
Last Modified Date : 24/04/2018
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The customer does not use auditing. They want to ensure it is completely turned off for performance reasons leading up to a major sporting event, Grand National. 
Env : 9.3
Please ensure you have turned off audits; the ultimate way to turn off audits is: 

1. make sure every instance of "Add Audit Detail" is Type=Log instead of Type=Audit 
2. Add a custom audit sink policy, remove all the assertions from it, and only have a "continue processing" 
3. set the audit.messageThreshold and audit.detailThreshold to WARNING or SEVERE, depending on what information you want to keep in your ssg logs.