Hello everyone, I have a problem with the tp-link wr841n v11 router I installed ddwrt on it (I need it as a wifi relay) everything works but by connecting to it with a 150Mbps card the connection is up to 72Mbps regardless of whether I'm 30 cm from the router or 10m and 2 walls on below I have the same router only in v9 version (it was once ddwrt on it but without much problem I returned to the original Tp-link software) and when I connect to it I have full 150Mbps and clearly higher 30Mbps connection speed: 53Mbps. Would someone help me get back to the original soft? I have rather poor knowledge of computers and routers, but I'm learning 
Greetings.
Greetings.
