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I have replaced my Archer C3200 by the Deco pack(3 p). Its replaces also the  Access points on each (2) level in my house. After an easy installation of the Deco it appears the network printer (LAN) is giving issues. My Mac is not seeing the printer at all. The windows laptop saw it once, the next time after rebooting,  it was erroring. So how can this happen? A LAN printer working fine before is not working any longer in the concept of the Deco. The deco is similar as the Archer connected to the Ziggo modem (in Bridge modus) and the deco is the LAN and WIFI in house. 

Finally I connected the printer to the WIFI. But the question remains about the unexpected behaviour towards the LAN. That should work as well.