mqtt/Mqtt/MQTT.Broker/release/MQTT.Broker.runtimeconfig.json

{
  "runtimeOptions": {
    "tfm": "netcoreapp3.1",
    "includedFrameworks": [
      {
        "name": "Microsoft.NETCore.App",
        "version": "3.1.4"
      },
      {
        "name": "Microsoft.AspNetCore.App",
        "version": "3.1.4"
      }
    ],
    "configProperties": {
      "System.GC.Server": true
    }
  }
}