I have been unstable on all latest firmwares. (asus or merlin) and started a support thread with Asus, tells me my warranty expired 11/27/22 ouch. Should have started to ping them earlier as I have been in a mess regarding this router for 6 months now. have done all that can be thought of. Reverted to my older ac87u today as can't afford dropped calls this week while I battle how to get this premiere piece of Sh.. figured out. my AX86U is one of the early versions manufactured likely October 2020. I am sure Asus knows the issues, they are just acting unknowledgable.