Hi,

I have an Archer C6 v2, which I have been using since February or March this year, without any problems. However since last week or so, it is producing intermittent connection breaks. I suspect it is the router, because I don't just lose internet connection, I lose internal LAN connection to my home server as well. Each such connection break lasts for 5-10 seconds. It is somewhat annoying as I work from home office and attend a lot of online meetings.

What I noticed is that the router's status page shows usual CPU usage between 8 - 20%, memory usage is almost constantly at 34 - 35%. CPU usage sometimes spikes to 50-70%, or even 100% for a second or two and goes back down. I watched it during my last meeting, and I noticed the following, three times in a row:

1. CPU usage went to 85%, I lost connection on my meeting
2. 1 second later, CPU usage went to 100%
3. CPU usage remained at 100% for 6-7 seconds, there was no connection
4. CPU usage went down to 25%, 1 second later connection came back

This happens seemingly randomly: sometimes it happens 3 times in 30 minutes (like now), sometimes I'm fine for hours.

I have 100/100 Mbps internet connection here, most of the time I had about 90/90 Mbps connection, right now I have 50/90 Mbps according to speedtest, which should be plenty enough for my meetings (nothing else is using the internet connection at the moment.

As for the router setup, I use the following features:

• PPPoE internet connection
• Single DHCP reservation for my Linux server
• NO-IP Dynamic DNS setup
• Both 2.4 and 5 GHz Wi-Fi
• 2 Virtual Server connections (to access my Linux SSH and website through internet using custom ports)
• Scheduled reboot once every week

Does anyone have any idea what may be causing this behavior? I can try to switch off features one-by-one to see if maybe some config is causing it, but seeing as the issue is quite random, I'm not sure if I can fully verify it is gone or not.

Now, one last thing I have to mention: that Linux server I'm using, has transmission-daemon torrent client installed, for reasons. I'm not using it overwhelmingly, at any time I have maximum 2-3 enabled torrents. Have been using it all the time since I have this router, and as I mentioned, no issues, but I felt like mentioning it for full picture.