Set minimum window size to 640x360 instead of 1280x720

src/core/frontend/emu_window.cpp

@@ -46,7 +46,7 @@ private:
 EmuWindow::EmuWindow() {
     // TODO: Find a better place to set this.
     config.min_client_area_size =
-        std::make_pair(Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height);
+        std::make_pair(Layout::ScreenUndocked::Width / 2, Layout::ScreenUndocked::Height / 2);
     active_config = config;
     touch_state = std::make_shared<TouchState>();
     Input::RegisterFactory<Input::TouchDevice>("emu_window", touch_state);

src/yuzu/loading_screen.cpp

@@ -61,7 +61,7 @@ LoadingScreen::LoadingScreen(QWidget* parent)
     : QWidget(parent), ui(std::make_unique<Ui::LoadingScreen>()),
       previous_stage(VideoCore::LoadCallbackStage::Complete) {
     ui->setupUi(this);
-    setMinimumSize(1280, 720);
+    setMinimumSize(640, 360);
 
     // Create a fade out effect to hide this loading screen widget.
     // When fading opacity, it will fade to the parent widgets background color, which is why we