Does it happen that ping drops or network delays increase? So this instruction may help…
Go to Bluetooth settings and turn it off.
Next, turn off all wireless networks.
Then go to
/Library/Preferences/SystemConfiguration/ and delete these files:
And we reboot.
After these manipulations, all network settings will be lost except for the lists of wifi access points.
Then we go into the wifi settings, go to the preferred networks item and remove everything unnecessary. (no need to be sorry)
We reboot and rejoice at the result.