>(1) Use only 5GHz for Wi-Fi. Turn off 2.4GHz WiFi - it's an overloaded, noisy spectrum band.
This is an extremely bad idea in some countries, or if you’re not careful which channel you select. In nearly all countries some of the 5ghz channels are shared with RADAR and require DFS. In some countries (eg Germany) all of the channels do.
The idea behind DFS is to detect radar pulses and then shut down the network for a period of time, this can be triggered by radar or interference.
(1) If you can use a DFS channel - use it. it's usually less congested than the regular channels
(2) If you're unlucky and DFS is triggered once per month or more, try repositioning the AP or changing the AP model to one less sensitive to radar pulses
(3) If no luck - use one of the non-DFS channels. Every country has those. In Germany, that would be channels 32-48 or 149+
Note that DFS (5.4GHz) is for weather radar. In some countries it's operated only in winter season. You may want to use different channels in summer and in winter :)
This is an extremely bad idea in some countries, or if you’re not careful which channel you select. In nearly all countries some of the 5ghz channels are shared with RADAR and require DFS. In some countries (eg Germany) all of the channels do.
The idea behind DFS is to detect radar pulses and then shut down the network for a period of time, this can be triggered by radar or interference.