@JanRekenaar Hi, I think it should. I did receive similar feedback even over the 1.6.4 beta here: Deco X50_V1_1.6.4 Boosted Network Stability for Smart Home Devices Were you still on this version?...

@BasJS Hi, Welcome to the community. The network topology seems fine. Have you set Deco XE75 Pro into Access Point mode? If there are Ethernet ports available, I would recommend normal Ethernet...

@Hilbrand Hi, welcome to the community. Did you set Deco M4 into Access Point mode? - If not, it is recommended to set Deco into Access Point mode: How to set up Deco to work in Access Point mode...

@dturtill Hi, Deco X10 supports Connection Preference. Did it help if you set it to connect to the nearest Deco X10 and preferred 2.4GHz band? How to select a preferred signal source on the Deco App...

@Jaytea Hi, Thank you very much for the feedback. May I know who your internet service provider is? ---Is the internet conenction type on the Deco APP, Dynamic IP? Can I have the current firmware...

@N1XKP Hi, Can I have the current firmware/hardware version of your Deco E4? If it is V1/V2, It is also suggested to test the 1.7.0 firmware here: Deco E4_V1/V2_1.7.0 Added Connection Preference, IoT...