As an update, I still have the same symptoms, even though the syslogs are slightly different. I am not sure I want to mess with swap settings, just not my comfort/knowledge level. My plan now is to revert to Asus stock firmware, make sure its the newest update, and see if im still unstable. At this point though im already router shopping. Will continue to update here though incase others in the future see this issue.
Nom du routeur
rt-ac5300
Modèle du Routeur
Asus RT-AC5300
Version du Micrologiciel
DD-WRT v3.0-r50551 std (10/19/22)
Kernel Version
Linux 4.4.302-st25 #7966 SMP Wed Oct 19 04:55:11 +07 2022 armv7l
This model, not the GT-AC5300, is now supported by 4 different firmwares, with FreshTomato having added support as of 11/2/2022. If Merlin, stock and FT prove stable on this device we can assume where the problem lies. N.B. all those three are still Kernel 2.6, AFAIK, stock/Merlin switched to 4.2 for AX devices, but unsure if that extends to the AC-5300, haven’t tried those two in a while.
I’m going to be converting my AC-5300 over to FT as a trial to test out their CTF speed and whether they have working all 128KiB of NVRAM.