Web requests may see a 5 second delay on each HTTP request (dependent on URL), from when the query (GET, POST, etc) is sent before any data is received by the client.
When ‘Dynamic URL filtering’ is enabled (default setting), if the “database.brightcloud.com” service is unresponsive or unreachable, the Palo Alto will keep trying to contact the database for 5 seconds before giving up.
This 5 second delay happens for EVERY url that is not found in the base database stored locally on the Palo Alto.
Disable ‘Dynamic URL filtering’ option for the URL filtering profile.
Or correct the issue which is preventing access to the database.brightcloud.com service.