Kevin_Z wrote

@Linestudio1 

 

Hello, do you mean that the speed from 5GHz will drop to the half and you can make it work normal by reboot and edit the wireless channel temporarily?

 

What is the bandwidth you paid for your ISP? And what is the actual normal speed you can get from the 5GHz?

 

What is the current hardware and firmware version of the Archer C1200? Do all the devices have the same issue? What about the wired speed and the 2.4GHz speed?

 

You can use different wireless channel to give it a shot, like channel 36, 40 or 44.

 

Good day.

@Kevin_Z 

YES , speed from 5GHz will drop to the half and you can make it work normal by reboot and edit the wireless channel temporarily.

i have 200 mbps bandwidth . i get normally around 190 mbps in speedtest but with my issue i get 60 mbps .

i have C1200v2_us-up-2.0.2 Build 20180117 rel.70858 , yes all the devices wirelessly have same issue but in wird devices no problems at all i get full speed 

i tried so many channels but didn't solve it 

UPDATE :

after testing 2.4GHz it has also the same problem it drops more than the half :(