Archer C6 EU Wifi 2.4 packetloss and ping spikes.
I would like to ask for help with my strange problem. Im using this router as a main behind modem drom my ISP. I set up 5ghz and 2.4 ghz wifi. On 5ghz everything is fine but on 2.4 conected devices lags so much. My speed is 20/1 and it is not isp problem. I was using TP-Link T2U Plus wifi adapter on my pc but i broke. So i brought Tenda U6 but its the same. I have 1000 ping spikes to router. I reinstalled PC, moved it closer but nothing helps. In happens in form of random spikes. I tried it using ethernet and its gone. No ping spikes. Also I checked channels and used channel eleven it was least crowded. Is there something i can do to fix it ? Thanks