Attempting to set the log level to DEBUG mode on the validation server puts the service into an unstable, unusable state. This occurs when Enable Syslog is set to yes, and is often preceded by Validation Server latency that initially appears as network latency.
Incorrect data within the Syslog settings.
Edit the Validation Server settings and set the Enable Syslog option to No.
If this resolved the issue, navigate to Logs > Syslog Configuration to access the Syslog Configuration page. Verify host name or the IP address connectivity\name resolutions from the VIP EG to the destination. If possible, delete and re-enter these settings. Save the changes.