Personally, I have mine set to "2" seconds, but the default is "5" seconds. You can modify it to whatever you want that delay to be. Be aware of the condition I mentioned above, regarding the Content Rebuilder requiring some sort of delay.
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.