inconsistent internet

I have Arkadyan. I have been on TMI for 2 months next week. The only issues I have had are:

1) two units broke after update to 1.00.18. All access to 5g lost . No matter how many reboots, factory resets or location changes, 5g would never come back.

Also after update,  devices would on wifi would keep dropping off.  I am on my 3rd unit which did not break after the update. 

2) Roku Devices can not connect to 5 ghz band..The Arkadyan evidently doesn't transmit on channel 161 which is needed for Roku. My Brother has the Nokia & Roku devices can connect to 5ghz band on channel 161. The Nokia also lets you modify broadcast channels as well as disable wifi  The Arkadyan is locked down .

3) IP address...my IPV6 was incorrectly stating I was in Puerto Rico & was being served ads in Spanish on YouTube & Google searches would redirect me to Google Puerto Rico in Spanish.  A hard reboot of unit got me an ip address in Los Angeles 

4) My SNR on 5g is always poor yet all other metrics are excellent yet  My speeds on 5g N41 are greater than 600 down & approx 80 up on ethernet!  Much better than Spectrum ultra 500 ($80/mo).