Well I am using D-Link DGL-4500 from past couple of days. I wanted to know how often this particular router supposed to test the upload speed when the option has been set to automatic rather than that of manual? Why I am asking because I have observed that speed test is happening when I am doing speedtest? I am getting 3meg. However after resetting the router and tried a speedtest then UL speed is returning to 5meg. I measured the uplink in yesterday night and it was set to 3 meg before reset. Hence I have concluded that if Option has been set to auto or any reason router is getting upload speed lower than that of actual speed. Let me know if you are having any useful information to share on this particular matter. Thanks a lot in advance.