Both the 2.4 and 5G signals flucuate dramatically from anything more than 30 feet from the router. I have tried changing the channel to 1, 6 or 11 with little to no improvement. Even tried channel width of 40 and 20MHz, nothing really seems to help. Also, Transmit power is set to High. This router is a replacemnet to an old Linksys that performed much better but the security is out dated. Please can anyone help with some things I can try (other than the typical relocate the router). Keep in mind, this Tp-Link is in the same locate my Linksys was.