Thanks for the quick reply and the help. I have 4 m5 decos in total. Each in a room with the main deco 9m plus in the center. The house is about 500m2. My connection speed is 250mbps wired. All decos...

I have DECO M5 system and ended up buying one m9 plus as main deco. Having instability problems ( maybe due to firmware updates on thr m5 being more recent) not sure of i did something wrong buy...