I've got 200 MBS fiber optic into the center of my 1400 sqf house, an N600 E2500 Linksysm wireless router with ethernet line to the modem, an an AC1200 Linksys network adapter in desktop 45 feet away (no walls between) but am only gettin 8-15 MBS download (and sometime more upload than down). Would an AC router make much difference? I can't figure out where the b ottlneck is. I know I wouldn't get 200 MBS wirelessly, but think I should get more than 10 or so.