@NickM4 Hi, welcome to the community. "I plug it into the phone line and my landline goes dead" As there is no DSL/phone port on the Deco X50-4G, I wonder whether you might select the wrong model. Is...

@Haru0819 Hi, thanks for the update. It is suggested to update Deco X50 to the latest 1.6.7 first to see whether it helped: Deco X50/X55_V1_1.6.7 Optimized the Client Network Stability Wait for your...

@vaumir Hi, welcome to the community. Yes, Deco X50 will work well with Deco X55. Can different Deco models work together? Best regards.

@Happie Hi, nice to see you again. Have you checked on the Deco App whether the satellite Deco X20-DSL is working properly on the Ethernet Backhaul, instead of WiFi Backhaul: After that, please also...

@Im-New-To-This Hi, thank you very much for the feedback. Have you tried the suggestions listed here:...

@User72536 Hi, yes, Deco BE85 supports TCP MSS clamping. It is derived from the MTU size. Best regards.