you need to check into the router and modem your using if it has the puma intel chipset they have problems and mine does some of the same stuff and atlantic broad band has said that to me in the past they dont see nothing wrong heres a link to start looking into this https://approvedmodemlist.com/intel-puma-6-modem-list-chipset-defects/#:~:text=Intel%20Puma%206%20Defect%20Explained&text=Intel's%20Puma%206%20chipset%20included,or%20simply%20surfing%20the%20web.