Disconnect, timeout

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Hello.
I did not find the answer on the forum, so I ask.
I have a game, shooter.

There is such a problem: If the network disappears for a moment (turn on and off 4G), the server will still turn me off
Errors
Cannot send to x.xxx.xxx.xx. Network is unreachable
Cannot send op: 254 not connected. PeerState: Disconnected

Although the players continue to move and I see their updates. But after a couple of seconds, I still disconnect from the server.

Please tell me how to increase the stability of the connection (I would like to have 3-5 seconds to restore the connection)

We now have 10 percent of users who receive disconnects during a game (With a stable connection)

Unity 2017 4.29
PUN 1.9

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