I manually updated from 9.0.0.4.386.46980 beta yesterday and did not do a reset. All is working fine without any problems. Wireless backhaul is still at 160.
I upgraded from 42095 to 45898 without doing a reset and have not had any problems. Everything is very stable. @ncrr I have the WAN speedtest under Adaptive QOS, Internet speed test. I also have not been losing internet every morning nor do I have a slower WAN speed. I am getting the same...
I am on firmware 42095. I changed my wireless backhaul to channel 100 and to 80MHz width. I have not had a problem since then. I am waiting to the next firmware release after 43181 before upgrading.