@crrodriguez @Philbert Thank you!I will consistently switch to 5 Ghz. In any case, the problem was in the new switches that are not connected to the general monitoring, in the new office that reset...

The channel is 60-90% loaded at almost all points. There is no big load on them, although the speed does not rise above 0.7-1 mb/s ! when I am connected alone. Restarting, disconnecting from the...