@David-TP I've just checked the email. It's a support request for remote access (which I usually will decline due to security issues). Thank you for the help so far with my devices. I have given up...

@David-TP By the way, after about one week using the beta, I see almost no improvements. Network still goes down multiple times a day, and CPU usage is still always at 100%.

@David-TP I just realised today that I'm now getting this in my local network, most probably because of the beta I installed. Why is his happening? It wasn't like this before.

@David-TP Installed it just now and within 1-2 hours CPU usage is still very high but I will let it stabilise for the next few days and report back.

When bugs and security holes are barely patched, firmware updates are so sparce, and products get pushed to end-of-life within 2-3 years ... then you know you are in trouble.

@David-TP TP-Link support is non-existent here in my country. Email them for exchange almost two weeks ago. No reply. Called up many times, no one picks up. Live chat? No agents available.