check that ...\steamapps\common\Le Mans Ultimate\UserData\player\CustomPluginVariables.JSO N contains

Code:
  "rFactor2SharedMemoryMapPlugin64.dll":{    " Enabled":1,
    "DebugISIInternals":0,
    "DebugOutputLevel":0,
    "DebugOutputSource":1,
    "DedicatedServerMapGlobally":0,
    "EnableDirectMemoryAccess":0,
    "EnableHWControlInput":1,
    "EnableRulesControlInput":0,
    "EnableWeatherControlInput":0,
    "UnsubscribedBuffersMask":160
  }