Vexira
Part of the Furniture
I meant it as a temporary till it is fixed, but that is absolutely insane that looks like some hard ware issue from what you linked, ether that or some major bug I'm surprised it hasn't been fixed already, that's unacceptable.RT-AC86U may refuse to boot after soft reboot. This is one of the issues with this router.
https://www.snbforums.com/threads/ac86u-sometimes-powers-completely-off-during-reboot.48296/
And scheduled reboot is not a solution, it's only a workaround. The software has to be fixed.