OrbiOS MR 2.1 issues

I finally returned my original RBK53 system to Costco yesterday because it had been frequently and randomly rebooting for the past few weeks. I then purchased another new RBK53 to take the place of the original. After initial setup, I changed the RBR50 to AP mode (using an Apple Airport Extreme as the router) and initiated the suggested firmware update to v2.1.2.18. All three units updated successfully. Within 3 hours the RBR50 rebooted, then again about 45 minutes later, after that I went to bed. I assume the reboots continued throughout the night because the logs of the Orbi were clear when I woke up (aside from the initial [Initialized, firmware version: V2.1.2.18] message).
Today I saw this post and uploaded firmware v2.0.1.4 to the satellites and then to the router. The system stayed steady for close to an hour, then a reboot, then another reboot a few minutes later, then another after that, and so on.
I've spent the past couple hours searching for a replacement system that meets my needs, but the specs of the Orbi are still the best for me. However, the constant reboots and dropped connections are not so great. I'd be happy to share my Orbi logs, but when the reboot happens the logs are wiped clean. Can we expect a serious fix to this issue anytime soon?

p.s. the system just rebooted again and I had to wait for connectivity to return before posting this.