Power & Source of Big Ideas

Actually OpenWRT has a watchdog that automatically resets the device when it freezes. Eventually it works. Since all OS are presenting the problem, even older versions that used to work, I believe the issue is actually on the hardware.
So far, OpenWRT is running without any issues. I suppose hardware is fine. So far I could not find where the problem is.Will keep using it with OpenWRT as my knowledge to find and fix the problem is limited.
I have the R2S with metal case for almost 2 years. It worked fine for a long time but last couple of months it started to freeze. I use only the wan port since I don't do routing with it, I use it to host some docker images for pihole, and nextcloud (not fast but works fine with external HD). I open...