@David-TP eureka! in QoS there was a limit to 15MB (I don't know how)... disabling QoS settings all works fine again. Thanks a lot!!

@ARGamingPK1 And the configuration data remains?

@David-TP done https://community.tp-link.com/en/home/forum/topic/833498

I have 3 X50 decos, the main unit wired to the operator's router (bridge mode) and the rest via wifi to the mail deco. Since last firmware update 1.6.7 Build 25031412 Rel. 48241 only hit 10-15MB in...

Same issues that @123ferret with my 2 decos X50 1.6.7 firmware. Speedtest on smartphones via wifi hit only 10MB, memory of the main router is +70% load with a few devices running... before de...

Solved updating the firmware to 1.6.7 :-) thank you!!!