It's 86U that has this specific issue. Others have chimed in about their 68U in the thread. Yes, I'm well aware of Fakespot and the poor ability of Amazon users to configure technical items. BUT there are rarely "fake" reviews mentioning a specific binary hardware problem (2.4Mhz radio fails), and that specific issue is well documented for the 86U on this forum as well. Yesterday's new post of this exact issue already has 3 "me too's".
I'm really surprised to see the "circle the wagons"/fanboyism in such a sophisticated group.
I may or may not take the risk of keeping the router. There is no doubt that it is one of the best one in its price class, and there is no doubt that the Merlin f/w adds exponential value. Both of these may well make it worth the risk.
But to deny that the multiple reports for a specific problem both on Amazon and here in this forum are a significant issue (when no such number of specific issues in such a short period of time exist for other routers, even different models of Asus) is silly, as is denying that the Asus response to individual warranty issues of ANY kind is almost non-existent (as is also well documented in both places).
"Mine works", "I don't have an issue", "You can't prove it statistically", etc. won't help solve the issue. But, of course, if you don't personally have the problem, why cares? If what I am hearing is: "This forum can have no influence on Asus QC or on their sucky warranty response", I can accept that. But denying the issue is just plain silly. Peace-out.