diff --git a/README.md b/README.md
index 0e9b224..12aef64 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ This will extract lsfg-vk to `~/.local`. Please **keep track of the files that w
 
 4. The graphical interface requires Qt6 and Qt6 Quick in order to run. If you do not have these installed, install the following packages:
 ```bash
-sudo apt install qt6-qpa-plugins libqt6quick6 # On Debian/Ubuntu-based systems
+sudo apt install qt6-qpa-plugins libqt6quick6 qml6-module-qtquick-controls qml6-module-qtquick-layouts qml6-module-qtquick-window qml6-module-qtquick-dialogs # On Debian/Ubuntu-based systems
 sudo pacman -S qt6-declarative qt6-base # On Arch-based systems
 sudo dnf install qt6-qtdeclarative qt6-qtbase # On Fedora
 ```
diff --git a/lsfg-vk-ui/rsc/UI.qml b/lsfg-vk-ui/rsc/UI.qml
index e1d5447..5cf3b87 100644
--- a/lsfg-vk-ui/rsc/UI.qml
+++ b/lsfg-vk-ui/rsc/UI.qml
@@ -237,8 +237,8 @@ ApplicationWindow {
                         Layout.fillWidth: true
 
                         model: ["None"]
-                        currentValue: backend.pacing_mode
-                        onActivated: (index) => backend.pacing_mode = model[index]
+                        currentIndex: backend.pacing_mode
+                        onActivated: (index) => backend.pacing_mode = index
                     }
                 }
 
@@ -250,8 +250,8 @@ ApplicationWindow {
                         Layout.fillWidth: true
 
                         model: backend.gpus
-                        currentValue: backend.gpu
-                        onActivated: (index) => backend.gpu = model[index]
+                        currentIndex: backend.gpu
+                        onActivated: (index) => backend.gpu = index
                     }
                 }
             }
diff --git a/lsfg-vk-ui/src/backend.hpp b/lsfg-vk-ui/src/backend.hpp
index 692fd67..ed39e14 100644
--- a/lsfg-vk-ui/src/backend.hpp
+++ b/lsfg-vk-ui/src/backend.hpp
@@ -32,9 +32,9 @@ namespace lsfgvk::ui {
         Q_PROPERTY(size_t multiplier READ getMultiplier WRITE multiplierUpdated NOTIFY refreshUI)
         Q_PROPERTY(float flow_scale READ getFlowScale WRITE flowScaleUpdated NOTIFY refreshUI)
         Q_PROPERTY(bool performance_mode READ getPerformanceMode WRITE performanceModeUpdated NOTIFY refreshUI)
-        Q_PROPERTY(QString pacing_mode READ getPacingMode WRITE pacingModeUpdated NOTIFY refreshUI)
+        Q_PROPERTY(int pacing_mode READ getPacingMode WRITE pacingModeUpdated NOTIFY refreshUI)
         Q_PROPERTY(QStringList gpus READ calculateGPUList NOTIFY refreshUI)
-        Q_PROPERTY(QString gpu READ getGPU WRITE gpuUpdated NOTIFY refreshUI)
+        Q_PROPERTY(int gpu READ getGPU WRITE gpuUpdated NOTIFY refreshUI)
 
     public:
         explicit Backend();
@@ -82,19 +82,20 @@ namespace lsfgvk::ui {
             VALIDATE_AND_GET_PROFILE(false)
             return conf.performance_mode;
         }
-        [[nodiscard]] QString getPacingMode() const {
-            VALIDATE_AND_GET_PROFILE("None")
+        [[nodiscard]] int getPacingMode() const {
+            VALIDATE_AND_GET_PROFILE(0)
             switch (conf.pacing) {
-                case ls::Pacing::None: return "None";
+                case ls::Pacing::None: return 0;
             }
             throw std::runtime_error("Unknown pacing type in backend");
         }
         [[nodiscard]] QStringList calculateGPUList() const {
             return this->m_gpu_list;
         }
-        [[nodiscard]] QString getGPU() const {
-            VALIDATE_AND_GET_PROFILE("Default")
-            return QString::fromStdString(conf.gpu.value_or("Default"));
+        [[nodiscard]] int getGPU() const {
+            VALIDATE_AND_GET_PROFILE(0)
+            auto gpu = QString::fromStdString(conf.gpu.value_or("Default"));
+            return static_cast<int>(this->m_gpu_list.indexOf(gpu));
         }
 
 #undef VALIDATE_AND_GET_PROFILE
@@ -147,14 +148,21 @@ namespace lsfgvk::ui {
             conf.performance_mode = performance_mode;
             MARK_DIRTY()
         }
-        void pacingModeUpdated(const QString& pacing_mode) {
+        void pacingModeUpdated(int pacing_mode) {
             VALIDATE_AND_GET_PROFILE()
-            if (pacing_mode == "None")
-                conf.pacing = ls::Pacing::None;
+            if (pacing_mode == 0)
+            switch (pacing_mode) {
+                case 0:
+                    conf.pacing = ls::Pacing::None;
+                    break;
+                default:
+                    throw std::runtime_error("Unknown pacing mode in backend");
+            }
             MARK_DIRTY()
         }
-        void gpuUpdated(const QString& gpu) {
+        void gpuUpdated(int gpu_idx) {
             VALIDATE_AND_GET_PROFILE()
+            const auto& gpu = this->m_gpu_list.at(gpu_idx);
             if (gpu.trimmed().isEmpty() || gpu == "Default")
                 conf.gpu = std::nullopt;
             else