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

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...

hi i have issue with wifi 5Ghz it drop to the half suddenly , i have to reboot the device or try to edit the channels it solved at that moment and then it drop again what is the wrong with it !!!