With default QoS settings, ISP service of 5Mbps, inbound set at 999999, an average improvement of 40Kbps with QoS enabled, as opposed to disabled. Tested several times at three different sites. Outbound, however, was as much as 30Kbps less with QoS set at 500, which is the ISP's plan, compared to QoS disabled. Set at 450 it was 80Kbps less. Any suggestions? Thank You!