Unifi AC Pro setup problems

Measured first at the router via cable, then later the Wi-Fi throughput with an appropriate app!
It then improved and the throughput was also 260 Mbps at both access points!

You have to delete (forget) the APs in the controller. Then reset and re-add them. This is not done with a phone but with a Cloudkey, laptop with controller... Throughput also depends on which network (2.4 GHz or 5 GHz) you are on, how many other users are logged in, how the reception is.... I always recommend the NanoHDs. Faster, smaller, more energy-efficient, longer support... Once set up, you make a backup of the controller. So in the event of a total loss, restoration is just a matter of a few clicks.

Unfortunately, I was a bit busy and can only respond now! One reason I got the Unifi is that you can now configure it with the peer app. But even with the computer and controller, it simply doesn't work! One time it showed me an access point but I couldn't access it; the next morning it was gone again. Now it blinks blue in the app and is displayed to me, but not in the controller. I also have no access to the APs in the app. At the beginning, I was able to enter login credentials on one, but then I never got back on it!