Asus' RT-AC68R wireless router seems to hang up at times

I am not sure which thread this applies but I attempted to send the following
as an email to merl @ ... the email address specified on the Merlin download website
and it bounced back. So here is the email I attempted to send.

Hello

I had been using the Merlin firmware for a few Asus RT line routers
namely and mainly for the RT-AC68R (and RT-AC66R and RT-N66R)
wireless routers to bridge them on the 5 GHz band. The main purpose
I considered the firmware modification usage was that it allows...

Asus' RT-AC68R wireless router seems to hang up at times