@Luc2as It's really a mystery, to us as well. We would like to escalate your case to our engineers, the engineering team will investigate to see if it is a concern in the router that can be resolved.

@GustavoNihei Thank you very much for sharing your test results, we appreciate it. To locate the issue efficiently, I've forwarded your case to the TP-Link support engineers who will contact you with...

@IM79 Hello, was there any change or modification on the router or in the network before this issue starts happening, such as upgrading the router firmware? Who is your ISP? Be sure you still get a...

@kaizacorp Hello, can I know who is your ISP? Be sure the modem is still stable. You can also try to modify the internet DNS servers on the AX1800 manually, you can try 8.8.8.8 and 8.8.4.4, then...

Luc2as wrote @Kevin_Z Hello, the channel is in auto mode as all, which corresponds to 38. Do you mean it is broadcasting at channel 36? 2Ghz works perfectly fine. Yes it's very strange, I've never...

Hello @DassEval, To assist you efficiently, I've forwarded your case to the TP-Link support engineers who will contact you with your registered email address later. Please pay attention to your email...