Fixed: Significantly improved api performance.

src/NzbDrone.Integration.Test/Client/CommandClient.cs

@@ -1,5 +1,10 @@
 using NzbDrone.Api.Commands;
 using RestSharp;
+using NzbDrone.Core.Messaging.Commands;
+using FluentAssertions;
+using System.Threading;
+using NUnit.Framework;
+using System.Linq;
 
 namespace NzbDrone.Integration.Test.Client
 {
@@ -9,5 +14,42 @@ namespace NzbDrone.Integration.Test.Client
             : base(restClient, apiKey)
         {
         }
+
+        public CommandResource PostAndWait(CommandResource command)
+        {
+            var result = Post(command);
+            result.Id.Should().NotBe(0);
+
+            for (var i = 0; i < 50; i++)
+            {
+                if (result.Status == CommandStatus.Completed)
+                {
+                    return result;
+                }
+
+                Thread.Sleep(500);
+                result = Get(result.Id);
+            }
+
+            Assert.Fail("Command failed");
+            return result;
+        }
+
+        public void WaitAll()
+        {
+            var resources = All();
+            for (var i = 0; i < 50; i++)
+            {
+                if (!resources.Any(v => v.Status == CommandStatus.Queued || v.Status == CommandStatus.Started))
+                {
+                    return;
+                }
+
+                Thread.Sleep(500);
+                resources = All();
+            }
+            
+            Assert.Fail("Commands still processing");
+        }
     }
 }