Do not use a Thread to Periodically check for Due workers.

Each Periodic Worker has it's own Thread that waits for execution.

API/Program.cs

@@ -135,12 +135,10 @@ using (IServiceScope scope = app.Services.CreateScope())
     context.Sync();
 }
 
+Tranga.SetServiceProvider(app.Services);
 Tranga.StartLogger();
-
 Tranga.AddDefaultWorkers();
 
-Tranga.PeriodicWorkerStarterThread.Start(app.Services);
-
 app.UseCors("AllowAll");
 
 app.Run();