It actually works best if left at default settings, there is no need for a guide just to get it working, only for finetuning and custom setups.
What makes you say defaults are no good?
Hi!
It is my first Mikrotik. When the package arrived in the morning, I was excited and just wanted to plug it in, so I followed the default approach, filling in WiFi details on the quick set page and modifying the LAN subnet. It worked terribly. My Teams sessions were often disconnected, and my laptop kept switching between WiFi and Cellular backup.
Then I followed Mikrotik's guide and set up WiFi with fixed frequencies. It worked better. Still, my laptop was switching between 2.4/5, and it was slightly disturbing my work.
Setting up an access list to reject my laptop on 2.4 radio helped, and I have a stable link.
In the meantime, my cable company delivered a new cable modem with WiFi6. After a few tests, I was surprised, as the 5GHz radio from this little modem, without any external antennas, was working better than from ax3
it also supports 160MHz, setting up the link at 2Gbps speed.
To summarize: from my experience so far, Mikrotik ax3 on default configuration works much worse than Asus RT-AC68U (my old AP), Sagemcom F3896LG-LC (my cable modem) or Ubiquiti AmpliFi Instant AFi-INS, compared to using identical laptops and similar ranges.
Currently, I'm on Mikrotik, and my cable modem is in bridge mode (radio off). I like the UI, terminal, and tons of features. As an engineer with networking experience, it is a dream device.
I hope I can tweak it and reach around 700Mbps on the radio at my desk and a stable link without many disconnections.
I'm now on 7.8rc3, link speed varies between 300-700, and I have some disconnections, with a logged message:
@wifi1 rejected, can't find PMKSA
I hope it can be improved.