A performance or deadlock issue which has no vendor-specific solution may be resolved if Symantec Endpoint Protection (SEP) Auto-Protect is configured to skip scanning of files accessed by a third-party process.
SEP is designed to scan each and every I/O on the file system.
To reduce potential for impact where a third-party process on an endpoint may have competing I/O, if this process is implicitly trusted it can be set as a trusted process.
You may now apply the policy to a group and confirm the updated policy resolves the issue.