Is it possible to mute wifi in the entire village?

Question

WiFi

Hello dear experts. Star question. Help me to understand. I work for a provider and we have many settlements connected. Recently, one of them began to receive a complaint about the poor performance of the Internet. Complaints, as a rule, about low speed (up to 30 MB) via wifi with periodic hovering of the router, via cable - it also sits (this is from the words of subscribers). At the time of the visit, by cable - 100, by wifi - + -30, the replacement of equipment, of course, does not help. There are more than 3 dozen such appeals and all in the last couple of weeks. The problem is not in the routers, since I took them home and checked the work, a weak laptop gave out up to 90 MB. The village is included in the ponom, ONUshki and ports (on the OLT) are different. Can something jam the whole village, or for what reasons does this happen? Tell me, please, in which direction to look or where to run?
Are routers rebelling against quarantine?)) I have already run out of ideas :) Thank you very much in advance!

Answer 1

Are there military installations nearby?
Or research institutes?

Answer 2

Natural, brute-force jamming, as EW specialists interpret it, is possible at unlimited costs, but most likely not in real life. Because there are too many channels, each of which must be jammed separately. To those who remind me that there are only 13 of them, I will ask - and at 5 GHz? There are a lot more of them.
By the way, from the practice of electronic warfare to combat jamming, I recommend the so-called. "spatial filtering" , which essentially boils down to replacing omnidirectional antennas with narrowly focused ones, aimed at each other. In this case, jamming signal sources located away from the line of sight will be effectively suppressed by antenna patterns.