Since I updated the firmware to 1.2.1 the router loses internet connection daily. I use it as an access point and it is showing it is disconnected from my network yet other wired devices connected to a different switch have no issues. This started as soon as I updated to 1.2.1. 

I noticed other routers having this issue and there was a beta firmware available to fix it. Is there a beta firmware for this Archer C5400X