Do you live in an area with a lot of RF noise? or with a lot of other Wifi networks? I've stayed for a month in New York last year at a place with a lot of other wifi networks and my Macbooks became much more flaky when connecting to wifi.
Maybe you can try changing the wifi channel?
But I can say that having an internet connection that's not great definitely creates a lot of problem and additional frustration. I was way more frustrated when I stayed that month in New York (for some reason the internet connection had intermittent packet loss), I'm really quite surprised at how bad internet connections are in the US.
I've tried different channels, but is that suggestion in regards to the signal (which is not a problem for me) or for its effect on reliability of keeping the connection?
I'm in the San Francisco area so you'd think RF noise would be pretty heavily present here. Before this I had the TP-Link AC1200 and I had all the issues you mentioned with that.