diff --git a/src/armnn/Runtime.cpp b/src/armnn/Runtime.cpp
index dbdd409..b1b7d51 100644
--- a/src/armnn/Runtime.cpp
+++ b/src/armnn/Runtime.cpp
@@ -7,6 +7,7 @@
 #include <armnn/Version.hpp>
 #include <armnn/BackendRegistry.hpp>
 #include <armnn/Logging.hpp>
+#include <armnn/utility/Timer.hpp>
 
 #include <armnn/backends/IBackendContext.hpp>
 #include <backendsCommon/DynamicBackendUtils.hpp>
@@ -171,6 +172,7 @@
     : m_NetworkIdCounter(0),
       m_ProfilingService(*this)
 {
+    const auto start_time = armnn::GetTimeNow();
     ARMNN_LOG(info) << "ArmNN v" << ARMNN_VERSION << "\n";
 
     if ( options.m_ProfilingOptions.m_TimelineEnabled && !options.m_ProfilingOptions.m_EnableProfiling )
@@ -225,10 +227,14 @@
     m_ProfilingService.ConfigureProfilingService(options.m_ProfilingOptions);
 
     m_DeviceSpec.AddSupportedBackends(supportedBackends);
+
+    ARMNN_LOG(info) << "Initialization time: " << std::setprecision(2)
+                    << std::fixed << armnn::GetTimeDuration(start_time).count() << " ms\n";
 }
 
 Runtime::~Runtime()
 {
+    const auto start_time = armnn::GetTimeNow();
     std::vector<int> networkIDs;
     try
     {
@@ -272,6 +278,8 @@
     m_BackendContexts.clear();
 
     BackendRegistryInstance().SetProfilingService(armnn::EmptyOptional());
+    ARMNN_LOG(info) << "Shutdown time: " << std::setprecision(2)
+                    << std::fixed << armnn::GetTimeDuration(start_time).count() << " ms\n";
 }
 
 LoadedNetwork* Runtime::GetLoadedNetworkPtr(NetworkId networkId) const
diff --git a/src/backends/cl/ClBackendContext.cpp b/src/backends/cl/ClBackendContext.cpp
index bfe93bd..42f42b3 100644
--- a/src/backends/cl/ClBackendContext.cpp
+++ b/src/backends/cl/ClBackendContext.cpp
@@ -79,7 +79,7 @@
 {
     if (value.IsInt())
     {
-        int v = value.IsInt();
+        int v = value.AsInt();
         if (v > static_cast<int>(TuningLevel::Exhaustive) ||
             v < static_cast<int>(TuningLevel::None))
         {
@@ -218,18 +218,18 @@
 
         ConfigureTuner(*(m_Tuner.get()), tuningLevel);
 
-        if (!m_TuningFile.empty())
+        if (!m_TuningFile.empty() && tuningLevel == TuningLevel::None)
         {
             try
             {
                 m_Tuner->load_from_file(m_TuningFile.c_str());
-            } catch (const std::exception& e)
+            }
+            catch (const std::exception& e)
             {
                 ARMNN_LOG(warning) << "Could not load GpuAcc tuner data file.";
             }
-
-            tuner = m_Tuner.get();
         }
+        tuner = m_Tuner.get();
     }
 
     m_ClContextControlWrapper = std::make_unique<ClContextControlWrapper>(