diff --git a/Docs/Whats_New.md b/Docs/Whats_New.md
index 3f2892d..a65f40d 100644
--- a/Docs/Whats_New.md
+++ b/Docs/Whats_New.md
@@ -23,6 +23,7 @@
 - Clarify static linking as the recommended linking approach for *iOS* app store distribution.
 - Add request for feedback from people who reject **MoltenVK** to `README.md` document.
 - Allow `MVK_CONFIG_SYNCHRONOUS_QUEUE_SUBMITS` build setting to be overridden.
+- Fix memory leaks of system classes during `VkInstance` and `VkQueue` creation.
 
 
 
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKInstance.mm b/MoltenVK/MoltenVK/GPUObjects/MVKInstance.mm
index 9ba0bb3..bdbb862 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKInstance.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKInstance.mm
@@ -282,17 +282,16 @@
 
 #pragma mark Object Creation
 
-// Returns a new array containing the MTLDevices available on this system, sorted according to power,
+// Returns an autoreleased array containing the MTLDevices available on this system, sorted according to power,
 // with higher power GPU's at the front of the array. This ensures that a lazy app that simply
 // grabs the first GPU will get a high-power one by default. If the MVK_CONFIG_FORCE_LOW_POWER_GPU
 // env var or build setting is set, the returned array will only include low-power devices.
-// It is the caller's responsibility to release the array when not required anymore.
 // If Metal is not supported, returns an empty array.
-static NSArray<id<MTLDevice>>* newAvailableMTLDevicesArray() {
-	NSMutableArray* mtlDevs = [NSMutableArray new];
+static NSArray<id<MTLDevice>>* availableMTLDevicesArray() {
+	NSMutableArray* mtlDevs = [NSMutableArray array];
 
 #if MVK_MACOS
-	NSArray* rawMTLDevs = MTLCopyAllDevices();			// temp retain
+	NSArray* rawMTLDevs = [MTLCopyAllDevices() autorelease];
 	if (rawMTLDevs) {
 		bool forceLowPower = MVK_CONFIG_FORCE_LOW_POWER_GPU;
 		MVK_SET_FROM_ENV_OR_BUILD_BOOL(forceLowPower, MVK_CONFIG_FORCE_LOW_POWER_GPU);
@@ -322,13 +321,11 @@
 		}];
 
 	}
-	[rawMTLDevs release];								// release temp
 #endif	// MVK_MACOS
 
 #if MVK_IOS
-	id<MTLDevice> md = MTLCreateSystemDefaultDevice();
+	id<MTLDevice> md = [MTLCreateSystemDefaultDevice() autorelease];
 	if (md) { [mtlDevs addObject: md]; }
-	[md release];
 #endif	// MVK_IOS
 
 	return mtlDevs;		// retained
@@ -359,13 +356,16 @@
 										   mvkGetVulkanVersionString(MVK_VULKAN_API_VERSION).c_str()));
 	}
 
-	// Populate the array of physical GPU devices
-	NSArray<id<MTLDevice>>* mtlDevices = newAvailableMTLDevicesArray();		// temp retain
-	_physicalDevices.reserve(mtlDevices.count);
-	for (id<MTLDevice> mtlDev in mtlDevices) {
-		_physicalDevices.push_back(new MVKPhysicalDevice(this, mtlDev));
+	// Populate the array of physical GPU devices.
+	// This effort creates a number of autoreleased instances of Metal
+	// and other Obj-C classes, so wrap it all in an autorelease pool.
+	@autoreleasepool {
+		NSArray<id<MTLDevice>>* mtlDevices = availableMTLDevicesArray();
+		_physicalDevices.reserve(mtlDevices.count);
+		for (id<MTLDevice> mtlDev in mtlDevices) {
+			_physicalDevices.push_back(new MVKPhysicalDevice(this, mtlDev));
+		}
 	}
-	[mtlDevices release];													// release temp
 
 	if (_physicalDevices.empty()) {
 		setConfigurationResult(reportError(VK_ERROR_INCOMPATIBLE_DRIVER, "Vulkan is not supported on this device. MoltenVK requires Metal, which is not available on this device."));
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKQueue.mm b/MoltenVK/MoltenVK/GPUObjects/MVKQueue.mm
index 9a4dba4..d2cd34b 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKQueue.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKQueue.mm
@@ -38,9 +38,11 @@
 	lock_guard<mutex> lock(_qLock);
 	id<MTLCommandQueue> mtlQ = _mtlQueues[queueIndex];
 	if ( !mtlQ ) {
-		uint32_t maxCmdBuffs = _physicalDevice->getInstance()->getMoltenVKConfiguration()->maxActiveMetalCommandBuffersPerQueue;
-		mtlQ = [_physicalDevice->getMTLDevice() newCommandQueueWithMaxCommandBufferCount: maxCmdBuffs];		// retained
-		_mtlQueues[queueIndex] = mtlQ;
+		@autoreleasepool {		// Catch any autoreleased objects created during MTLCommandQueue creation
+			uint32_t maxCmdBuffs = _physicalDevice->getInstance()->getMoltenVKConfiguration()->maxActiveMetalCommandBuffersPerQueue;
+			mtlQ = [_physicalDevice->getMTLDevice() newCommandQueueWithMaxCommandBufferCount: maxCmdBuffs];		// retained
+			_mtlQueues[queueIndex] = mtlQ;
+		}
 	}
 	return mtlQ;
 }