Super annoying firmware V2.1.4.16 restarts my router frequently

I originally bought the RBK50 combo of a RBR50 & RBS50 for my condo and things worked great. Once I moved to a new home of tri-levels, I got another RBS50 so that each floor has its own mesh.

 

I have router RBR50 on the main floor connected directly to a fiber switch, and one of each RBS50 on top and basement floors. 

 

Ever since the firmware V2.1.4.16 hit my router and satellites, the wifi drops at least 2-3 times a day, sometimes it restarts and sometimes we have to power on-off to recover it.

 

I have tried downgrading the router 2-3 times to other firmware (down upto 2.0.074), 2 times factory reset everything, first the stupid system (it's my hate speaking now) goes back to latest version and I see no option to control that. The logs are useless on the system to figure out what's going on.

 

I do sometimes see the pink/magenta light on the new RBS50 that I later added, but why would it's sync failure casue the router system to crash is beyond me.

 

I am tired of my family calling when I am in office that internet is not working. For such a great company why is it so hard to provide a better way of manging a firmware or diagnostics.

 

I am a technical savvy person myself, so at this point, I really want a solid advice, or friendly advice to move to another company and never look back. For a system that I shelled $300+$150 ~ $500 I expected better reliability.

 

There is no ethernet backhaul or other load on the system, no disney and other things, just a single internet wire into the router which it needs to spread via satellite mesh.

 

Hoping for some pointers as I am unsure about my next steps here.

 

Sorry if this felt like rant, I am posting here after trying out everything and every setting and every recommendation posted in forums since last 2-3 weeks and finally had to resort to creating this post.

 

Tell me what logs and page scarpes you need to guide me, I will happily post them and keep it upto date.