fixup extra stuff + enable gamemode

src/video_core/vulkan_common/vulkan_wrapper.cpp

@@ -433,9 +433,9 @@ VkResult Free(VkDevice device, VkCommandPool handle, Span<VkCommandBuffer> buffe
 Instance Instance::Create(u32 version, Span<const char*> layers, Span<const char*> extensions,
                           InstanceDispatch& dispatch) {
     VkFlags ci_flags{};
-// #ifdef __APPLE__
-//     ci_flags |= VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR;
-// #endif
+#ifdef __APPLE__
+    ci_flags |= VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR;
+#endif
     // DO NOT TOUCH, breaks RNDA3!!
     // Don't know why, but gloom + yellow line glitch appears
     const VkApplicationInfo application_info{

src/yuzu/Info.plist

@@ -186,5 +186,15 @@ SPDX-License-Identifier: GPL-2.0-or-later
             </dict>
         </dict>
     </array>
+
+    <!-- ITS -->
+    <key>ITSAppUsesNonExemptEncryption</key>
+    <false/>
+
+    <!-- GC -->
+    <!-- Game mode is supposed to be automatically enabled by the app category specification above,
+        but for some reason it needs to be explicitly enabled with this key. -->
+    <key>GCSupportsGameMode</key>
+    <true/>
 </dict>
 </plist>