How Recording 100 rtsp or more

[desenvolvimentofonelight]

I'm using FFMpegCore to record 100 cameras, the problem I'm going through is that it opens the 100 ffmpeg processes but only starts recording +/- 15 cameras only. When I do the same process, only using Process.Start, they all open and save normally. On the system I take camera by camera and create a Threading.Thread function Gerar

For Each Item In Lista
      If Not Directory.Exists(Path.GetDirectoryName(Item.outputFilePath)) Then Directory.CreateDirectory(Path.GetDirectoryName(Item.outputFilePath))

      Dim T1 = New Threading.Thread(AddressOf Gerar) With {.IsBackground = True}
      Dim Parametro1 = New Object() {Item.SimpleRtspUrl, Item.outputFilePath, Item.ChaveCamera}
      T1.Start(Parametro1)

      'Dim T1 = New Threading.Thread(AddressOf FFMPEGV2) With {.IsBackground = True}
      'Dim Parametro1 = New Object() {Item.SimpleRtspUrl, Item.outputFilePath, Item.ChaveCamera}
      'T1.Start(Parametro1)
  Next

Public Sub Gerar(Ob As Object)
        Dim rtspUrl As String = Ob(0)
        Dim outputFilePath As String = Ob(1)
        Dim ChaveCamera As String = Ob(2)
        Try
            Dim aaa = FFMpegArguments.FromUrlInput(New Uri(rtspUrl), Sub(argumento)
                                                                         argumento.WithCustomArgument("-re")
                                                                         argumento.WithCustomArgument("-rtsp_transport tcp")
                                                                         argumento.WithCustomArgument("-timeout 50000000")
                                                                     End Sub) _
            .OutputToFile(outputFilePath, True, Sub(options)
                                                    options.UsingMultithreading(True)
                                                    options.WithVideoCodec("copy")
                                                    options.WithCustomArgument("-an")
                                                    options.WithConstantRateFactor(21)
                                                    options.OverwriteExisting()
                                                    options.WithCustomArgument("-reset_timestamps 1")
                                                    options.WithCustomArgument("-f segment")
                                                    options.WithCustomArgument("-segment_time 10")
                                                    options.WithCustomArgument("-segment_time_delta 0")
                                                    options.WithCustomArgument("-strftime 1")
                                                End Sub) _
                                                .WithLogLevel(Enums.FFMpegLogLevel.Debug) _
                                                .NotifyOnProgress(Sub(tt)
                                                                      Log2(tt.ToString, ChaveCamera)
                                                                  End Sub) _
                                                                  .ProcessSynchronously(True, New FFOptions With {.BinaryFolder = "D:\ffmpeg5\bin", .TemporaryFilesFolder = "D:\1\00000000002"})
            'options.WithVariableBitrate(4)
            'options.WithAudioCodec(AudioCodec.)
            'options.WithFastStart()
            'options.WithCustomArgument("-analyzeduration 5000000")
            'options.WithCustomArgument("-probesize 5000000")
            'Console.WriteLine("Gravação concluída! O vídeo foi salvo em: " & outputFilePath)
        Catch ex As Exception
            Log($"{MethodBase.GetCurrentMethod().Name} -> {ex}", ChaveCamera)
        End Try
    End Sub

It's just like that, just a few recording. The other FFMPEG has no CPU or network consumption