So I got a an archer be550 pro a few weeks ago

works well

but when I added some tp link wireless ranger extenders, a re813xe and a re650 for some extra coverage

for the past few weeks my internet of things network has been very unreliable, my amazon echos and smart light bulbs would randomly drop and have terrible connection

I looked at settings, I changed the password, but it seemed I could add a light bulb to the wifi and it would immediately drop off my app to control it.

I just disconnected both of my wireless range extenders, turned off easy mesh and its now working great!

so what is up with using the extenders?  I know they don't seem to IMPROVE the 2.4 GHz network for iot devices or improve range, but are they suppose to cause so much interference it actually ruins the iot network?