diff --git a/src/dxvk/dxvk_instance.cpp b/src/dxvk/dxvk_instance.cpp
index f588f7d7..8b5403b4 100644
--- a/src/dxvk/dxvk_instance.cpp
+++ b/src/dxvk/dxvk_instance.cpp
@@ -13,6 +13,7 @@ namespace dxvk {
 
     m_config = Config::getUserConfig();
     m_config.merge(Config::getAppConfig(env::getExeName()));
+    m_config.logOptions();
 
     g_vrInstance.initInstanceExtensions();
 
diff --git a/src/util/config/config.cpp b/src/util/config/config.cpp
index 9bbda328..5666bc73 100644
--- a/src/util/config/config.cpp
+++ b/src/util/config/config.cpp
@@ -13,7 +13,7 @@ namespace dxvk {
   const static std::unordered_map<std::string, Config> g_appDefaults = {{
     /* Assassin's Creed Syndicate - amdags issues */
     { "ACS.exe", {{
-      { "dxgi.customVendorId",              "10DE" },
+      { "dxgi.customVendorId",              "10de" },
     }} },
     /* Dishonored 2                               */
     { "Dishonored2.exe", {{
@@ -22,7 +22,7 @@ namespace dxvk {
     /* Dragon Quest 2 - keeps searching for NVAPI */
     { "DRAGON QUEST XI.exe", {{
       { "dxgi.customVendorId",              "1002" },
-      { "dxgi.customDeviceId",              "E366" },
+      { "dxgi.customDeviceId",              "e366" },
     }} },
     /* F1 2015                                    */
     { "F1_2015.exe", {{
@@ -43,12 +43,12 @@ namespace dxvk {
     /* Grand Theft Auto V                         */
     { "GTA5.exe", {{
       { "dxgi.customVendorId",              "1002" },
-      { "dxgi.customDeviceId",              "E366" },
+      { "dxgi.customDeviceId",              "e366" },
     }} },
     /* Batman: Arkham Knight                      */
     { "BatmanAK.exe", {{
       { "dxgi.customVendorId",              "1002" },
-      { "dxgi.customDeviceId",              "E366" },
+      { "dxgi.customDeviceId",              "e366" },
     }} },
     /* Mafia 3                                    */
     { "mafia3.exe", {{
@@ -188,8 +188,13 @@ namespace dxvk {
 
   Config Config::getAppConfig(const std::string& appName) {
     auto appConfig = g_appDefaults.find(appName);
-    if (appConfig != g_appDefaults.end())
+    if (appConfig != g_appDefaults.end()) {
+      // Inform the user that we loaded a default config
+      Logger::info(str::format("Found built-in config: ", appName));
+
       return appConfig->second;
+    }
+
     return Config();
   }
 
@@ -222,4 +227,14 @@ namespace dxvk {
     return config;
   }
 
+
+  void Config::logOptions() const {
+    if (!m_options.empty()) {
+      Logger::info("Effective configuration:");
+
+      for (auto& pair : m_options)
+        Logger::info(str::format("  ", pair.first, " = ", pair.second));
+    }
+  }
+
 }
diff --git a/src/util/config/config.h b/src/util/config/config.h
index bad14fd5..170983f4 100644
--- a/src/util/config/config.h
+++ b/src/util/config/config.h
@@ -65,6 +65,14 @@ namespace dxvk {
       return result;
     }
 
+    /**
+     * \brief Logs option values
+     * 
+     * Prints the effective configuration
+     * to the log for debugging purposes. 
+     */
+    void logOptions() const;
+
     /**
      * \brief Retrieves default options for an app
      *