Duplex mismatch inconsistency WPA7510
Hi there
I recently introduced a second WPA7510 extender to my home network. This second one I put in my kitchen as it is furthest away from the router in the loft and other extender (which is on the first floor) and it's been in the kitchen where I was having connectivity issues. The issue is this second extender occasionally has Powerline and Ehernet LEDS which turn red - I looked this up here https://www.tp-link.com/uk/support/faq/432/ which tells me this is due to less than optimal speeds. Switching it off and on again or moving it to another plug in the kitchen generally seems to restore all lights to a healthy green, but again, occasionally they slip to red and my devices prefer not to connect to it and seek out the main router or other extender with less success. I guess it could be down to a drop in speed due to the service or demand but the inconsistency makes me wonder if it's something else or something I can do about this.
I understand from a few Google searches that this could also be down to a 'duplex mismatch' which means nothing to me and more info here https://en.wikipedia.org/wiki/Duplex_mismatch.
I have 200MB/s speed in theory from Virgin Media but I don't get anywhere near this (I use apple / mac devices)
Any advice? Appreciate it could be a combination of factors or something I've not even thought about
J