Problem of stability wifi 2.4GHz
Location: Private House
Installation: On the first-floor wall in the center of the building
Channels crowd: any other wifi 2.4GHz in wifi analyzer app on Android
Clients: <10 devices
Device state: brand new
Configuration: Stand-alone mode (without Omada Controller)
Problem description:
The stability problem refers to the 2.4 GHz wifi network. Internet speed falls from 60 Mb/s to less than 1Mb/s, sometimes the wifi network disappears and then comes back. The problem frequency is from one to a few times in one hour. Sometimes it's difficult to go back to the network. On the 5 GHz, the internet is stable with a speed of around 200 Mb/s. The problem occurs on different devices: smartphones, PC, Tp-link repeater TL-WA850RE. The distance from AP tested from 1 meter to 10 meters with the same stability problem.
Repair attempts:
The firmware was updated from V4_5.0.7 Build 20220120 to V4_5.0.8 Build 20220613. The device was brand new, so all settings were defaults. I tested different channels for 2.4 GHz (1,6,11,13), channel range set to 20 MHz (also default 20/40 MHz), and also decrease Tx power without any change. For me, it looks strange and it's like some hardware problem with the device. Can I do anything? Or should I contact with guarantee service?