Listen I’m not huge on networking knowledge I just need some advice. On spectrums 300 mbps plan. 3 story house, bottom level is just a small basement for storage and garage. Bought a 3 pack deco m4, main node connected on the main story to the modem and puts out around 320-350 down speed. The other 2 nodes are top floor, one in a bedroom and the other in my office. The one in the bedroom hits around 140-150 down, and the one in my office was hitting around when connected wireless 80, so I connected it with a powerline adapter to the main node and now it’s around 110-120 down. I just feel like the strength they put out is pretty weak and want some advice if I just need a stronger system. I was looking at the deco xe75 since it seems to have a stronger range. Also picking up some cat6 cables later to upgrade some 5e cables I’m using currently.
With less than 1Gb speeds, you’ll not notice any improvement between a Cat5e cable, and a Cat6 or higher cable. Cat5e is rated for 1Gb speeds up to 325ft.
You’ll get better mesh performance with a tri-band system, such as the TP-Link Deco X68 or similar. It has a dedicated WiFi band to move the traffic between the units.
Note that WiFi is all about location, location, location.
Keep your mesh units within 20, perhaps 25 linear feet of one another, and for best coverage radius, don’t put them along exterior walls - keep them more towards the center of your home. This may mean running a longer cable between your modem, and your first Deco unit.