@Carl thank you very much for your help

@Carl sorry can I ask also what is "co-channel" upstairs seems to switch from 11 to 6, and my tool tells me that my co-channel is sometimes 6 sometimes 5 etc. and I find no trace of this in tplink...

@Carl many thanks for your reply and sorry for picking up US audience I analised with tool and infact channel 11 was used upstairs by a strong signal right above my room, i moved now to 1 which...

Firmware version:0.9.1 4.16 v0001.0 Build 180319 Rel.57291n Hardware version:TL-WR841N v14 00000014 Hello all I purchased recently this wifi router. quite disappointing so far. it really fluctuates...