@Kevin_Z should i select any configuration for DSCP or i don't touch anything????

@Kevin_Z okey ty so much i will try it ;)

@Kevin_Z do you know any solution??

@Kevin_Z hi Kevin, with my wired connection I have 90 Mbps and with wireless 160-150 Mbps. I'm paying 600 Mbps and i didn't enable anything on the router. "Try to ping the gateway of main router and...

I bought recently a wifi extender (RE450) and, at the start works perfectly, but one day, when the power went out, my ethernet port starts working rare, while the wifi works right, the ethernet...