Why are RPD clients constantly reconnecting?

Question

RDP

Good afternoon, there is a WS2016 server.
Some clients, when working on it, constantly reconnect every ~30 seconds. In the logs you can see:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="Microsoft-Windows-RemoteDesktopServices-RdpCoreTS" Guid="{1139C61B-B549-4251-8ED3-27250A1EDEC8}" /> 
  <EventID>132</EventID> 
  <Version>0</Version> 
  <Level>4</Level> 
  <Task>4</Task> 
  <Opcode>15</Opcode> 
  <Keywords>0x4000000000000000</Keywords> 
  <TimeCreated SystemTime="2019-11-20T07:37:33.843382000Z" /> 
  <EventRecordID>1713750</EventRecordID> 
  <Correlation ActivityID="{F420548B-C22F-4470-A4DA-195AB6590000}" /> 
  <Execution ProcessID="1320" ThreadID="3348" /> 
  <Channel>Microsoft-Windows-RemoteDesktopServices-RdpCoreTS/Operational</Channel> 
  <Computer>++++</Computer> 
  <Security UserID="S-1-5-20" /> 
  </System>
  <EventData>
  <Data Name="ChannelName">XPSRD</Data> 
  <Data Name="TunnelID">0</Data> 
  </EventData>
  </Event>

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="Microsoft-Windows-RemoteDesktopServices-RdpCoreTS" Guid="{1139C61B-B549-4251-8ED3-27250A1EDEC8}" /> 
  <EventID>143</EventID> 
  <Version>0</Version> 
  <Level>3</Level> 
  <Task>4</Task> 
  <Opcode>15</Opcode> 
  <Keywords>0x4000000000000000</Keywords> 
  <TimeCreated SystemTime="2019-11-20T07:37:33.845232800Z" /> 
  <EventRecordID>1713751</EventRecordID> 
  <Correlation ActivityID="{F4201942-07DB-43A4-B1CA-D2FB81670000}" /> 
  <Execution ProcessID="1320" ThreadID="3348" /> 
  <Channel>Microsoft-Windows-RemoteDesktopServices-RdpCoreTS/Operational</Channel> 
  <Computer>++++</Computer> 
  <Security UserID="S-1-5-20" /> 
  </System>
- <EventData>
  <Data Name="error">64</Data> 
  </EventData>
  </Event>

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="Microsoft-Windows-RemoteDesktopServices-RdpCoreTS" Guid="{1139C61B-B549-4251-8ED3-27250A1EDEC8}" /> 
  <EventID>226</EventID> 
  <Version>0</Version> 
  <Level>3</Level> 
  <Task>4</Task> 
  <Opcode>19</Opcode> 
  <Keywords>0x4000000000000000</Keywords> 
  <TimeCreated SystemTime="2019-11-20T07:37:33.845258300Z" /> 
  <EventRecordID>1713752</EventRecordID> 
  <Correlation ActivityID="{F4201942-07DB-43A4-B1CA-D2FB81670000}" /> 
  <Execution ProcessID="1320" ThreadID="3348" /> 
  <Channel>Microsoft-Windows-RemoteDesktopServices-RdpCoreTS/Operational</Channel> 
  <Computer>++++</Computer> 
  <Security UserID="S-1-5-20" /> 
  </System>
- <EventData>
  <Data Name="StateTransition">RDP_TCP</Data> 
  <Data Name="PreviousState">23</Data> 
  <Data Name="PreviousStateName">StateUnknown</Data> 
  <Data Name="NewState">21</Data> 
  <Data Name="NewStateName">StateDisconnected</Data> 
  <Data Name="Event">43</Data> 
  <Data Name="EventName">Event_Disconnect</Data> 
  <Data Name="ErrorCode">0x80070040</Data> 
  </EventData>
  </Event>

Then the reconnect happens. Perhaps, who faced?