@SharkAttackRJ Did you use the WPS method to connect AX53 as a satellite device to the AX90 - this should have worked. Anyway, AX90 is planned for implementing an Easymesh - here's easymesh...

@dis69 Here you can find the BE800 ethernet ports negotiated speed:

@dis69 I thought that you were on the latest FW release already. Which FW version you're using now. I can't see the negotiated speed screenshot - is everything OK there ? Do you have any internet...

@ChristianWolf Do you use a regular phone for voice calls (perhaps on the Phone 2 port) ? If that so, can you see these calls in the call log ? Do you have a DSL splitter in your premises - if you...

@dis69 I think that checking only the cable between the BE800 and Deco would suffice because (from your description) everything works as it should when you use your Archer AX75.

@dis69 Your ISP bandwidth doesn't matter in this case because the issue is within your LAN.