Your experience with Firmware 2.2.1.210 released as of 10/3/18

I'm in the UK. My configuration: RBR50 + RBS50 + RBS40 with. No change in placement for 13 months. RBR50 is in the basement. The RBS50 is two floors above the router and the RBS40 is one floor above the router. Before the auto update of 2.2.1.210 (therefore I am not sure about the exact date of the FW update), the RBS50 is daisy chained to RBS40, and RBS40 is connected to RBR50. All wirelessly connected.

(1) Around/right after the auto FW update, there were increasing occurances of droping wifi signal (iMac wifi signal icon shows disconnection for a sec or two and then re-connected). I'm ok with it becuase I rarely stream.

(2) About two weeks ago, connection speed slowed down by half (from 55+ Mbps to 25+MBps), we have many imacs/ipads at home, and most of the connections change from 5G to 2.4G. I performed the normal power-down/power-up and resync. Most of the iMac still connect at 2.4G with reduced download speed. I can live with that.

(3) I havn't checked the Router page for a while and I check it today. Two strange things happened: the satellites are no longer daisy chained but all connected to the router; the backhaul status show poor connection. The imacs are still connected at 5G for those attached to the RBS50, but those devices connected to the RBS40 shows 2.4G. Download speed is only 25+ for those at 2.4G.

(4) I poweroff/on all three orbis, all backhaul status are still "poor" after one hour and the two satellites are still connected to the router (it takes sometime for the orbi to "sink-in" the config as far as I understand). I finally found this thread and change the 2.4g channel to 11. Now, the backhaul status of the RBS50 is still poor (naturally because it's tow floors above the router) while the RBS40 is showing "good". HOWEVER, when I run broadband speed test on all computers and devices, the speed are now back to 55+ Mbps.

The strangest thing is about daisy chain, it makes no sense for the RBS50 connecting to the router because it is definitely further away from the router than to the RBS40!

Just FYI.