I recently purchased a Netgear Nighthawk Wifi 6 router and Wifi 6 mesh extender. My ISP provides a cable modem and router together. The modem/router from my ISP has a wifi connection as well as LAN. I have heard when you add access points to a network, the network speed gets cut in half. My first question is, does that happen on a mesh network? Second question is, if I am getting all my connections from my Nighthawk, does the wireless on the modem/router cause the speed to get cut in half as my connection from my ISP modem/router to my Nighhawk is connected through LAN? Another words, should the wireless signal be cut OFF on the cable/router?