@Kevin_Z Yes, I checked the Transmit Power is set to high for both the bands. I'll try updating my device. Thank you for your help.

@Kevin_Z Hello, my issue has mostly been fixed with a few calls to the Tech Support. Yes, the system is up-to-date and I am aware of the difference in 2.4GHz and 5GHz bands. I will be considering the...

So, I have been using Archer C20 router for my internet for more than a year now and It worked flawlessly during that time but over a month from now I had been having several internet speed and...