Unfortunately, "throttled" does not fix the problem on these particular models. See https://github.com/erpalma/throttled/issues/255
145 karma · joined March 27, 2013
Images for some device became too big to support a persistent overlay, causing such models to lose configuration after a reboot. If you experience this problem, please report the affected device in the forum and consider downgrading to OpenWrt 18.06 or using the Image Builder to pack a smaller custom image.