Radar/DFS is a whole other can of worms. My rules of thumb for DFS: (1) If you can use a DFS channel - use it. it's usually less congested than the regular ch

Radar/DFS is a whole other can of worms. My rules of thumb for DFS: (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 :)