TP Link WiFi extender makes my internet not work after a while
I recently purchased wifi extender and connected to my wifi network. Both are using same SSID. After connecting a while, my internet stops and/or becoming very slow (<1 Mbps).
Issue stops if I switch off the wifi extender.
WiFi Router:
Firmware Version: 0.9.1 4.17 v0001.0 Build 221028 Rel.34377n(5553)
Hardware Version: Archer C20 v5 00000005
WiFi Range Extender: N300
Hardware Version: TL-WA855RE 5.0
Firmware Version: 1.0.12 Build 221109 Rel.31477n (7378)
Firmwares are at the latest.
When I searched internet found a similar issue. However it is 4 yrs old. https://community.tp-link.com/us/home/forum/topic/209218