Complete reimplementation of the function

src/citra/config.cpp

@@ -126,9 +126,12 @@ void Config::ReadValues() {
     Settings::values.use_frame_limit = sdl2_config->GetBoolean("Renderer", "use_frame_limit", true);
     Settings::values.use_disk_shader_cache =
         sdl2_config->GetBoolean("Renderer", "use_disk_shader_cache", true);
-    Settings::values.frame_limit = 100;
+    Settings::values.frame_limit =
-    Settings::values.frame_limit_custom =
         static_cast<u16>(sdl2_config->GetInteger("Renderer", "frame_limit", 100));
+    Settings::values.use_frame_limit_alternate =
+        sdl2_config->GetBoolean("Renderer", "use_frame_limit_alternate", false);
+    Settings::values.frame_limit_alternate =
+        static_cast<u16>(sdl2_config->GetInteger("Renderer", "frame_limit_alternate", 200));
     Settings::values.use_vsync_new =
         static_cast<u16>(sdl2_config->GetInteger("Renderer", "use_vsync_new", 1));
     Settings::values.texture_filter_name =

src/citra/default_ini.h

@@ -143,6 +143,15 @@ use_frame_limit =
 # 1 - 9999: Speed limit as a percentage of target game speed. 100 (default)
 frame_limit =
 
+# Overrides the frame limiter to use frame_limit_alternate instead of frame_limit. Will only have
+# an effect if use_frame_limit is enabled
+# 0: Off (default), 1: On
+use_frame_limit_alternate =
+
+# Alternate speed limit to be used instead of frame_limit if use_frame_limit_alternate is enabled
+# 1 - 9999: Speed limit as a percentage of target game speed. 200 (default)
+frame_limit_alternate =
+
 # The clear color for the renderer. What shows up on the sides of the bottom screen.
 # Must be in range of 0.0-1.0. Defaults to 0.0 for all.
 bg_red =

src/citra_qt/configuration/config.cpp

@@ -78,10 +78,10 @@ const std::array<UISettings::Shortcut, 24> default_hotkeys{
      {QStringLiteral("Toggle Filter Bar"),        QStringLiteral("Main Window"), {QStringLiteral("Ctrl+F"), Qt::WindowShortcut}},
      {QStringLiteral("Toggle Frame Advancing"),   QStringLiteral("Main Window"), {QStringLiteral("Ctrl+A"), Qt::ApplicationShortcut}},
      {QStringLiteral("Toggle Screen Layout"),     QStringLiteral("Main Window"), {QStringLiteral("F10"), Qt::WindowShortcut}},
-     {QStringLiteral("Toggle Speed Limit"),       QStringLiteral("Main Window"), {QStringLiteral("Backspace"), Qt::ApplicationShortcut}},
+     {QStringLiteral("Toggle Speed Limit"),       QStringLiteral("Main Window"), {QStringLiteral("Ctrl+Z"), Qt::ApplicationShortcut}},
+     {QStringLiteral("Toggle Alternate Speed"),   QStringLiteral("Main Window"), {QStringLiteral("Ctrl+X"), Qt::ApplicationShortcut}},
      {QStringLiteral("Toggle Status Bar"),        QStringLiteral("Main Window"), {QStringLiteral("Ctrl+S"), Qt::WindowShortcut}},
-     {QStringLiteral("Toggle Texture Dumping"),   QStringLiteral("Main Window"), {QStringLiteral("Ctrl+D"), Qt::ApplicationShortcut}},
+     {QStringLiteral("Toggle Texture Dumping"),   QStringLiteral("Main Window"), {QStringLiteral("Ctrl+D"), Qt::ApplicationShortcut}}}};
-     {QStringLiteral("Unthrottle"),               QStringLiteral("Main Window"), {QStringLiteral("Ctrl+Z"), Qt::ApplicationShortcut}}}};
 // clang-format on
 
 void Config::ReadValues() {
@@ -448,8 +448,11 @@ void Config::ReadRendererValues() {
         static_cast<u16>(ReadSetting(QStringLiteral("resolution_factor"), 1).toInt());
     Settings::values.use_frame_limit =
         ReadSetting(QStringLiteral("use_frame_limit"), true).toBool();
-    Settings::values.frame_limit = 100;
+    Settings::values.frame_limit = ReadSetting(QStringLiteral("frame_limit"), 100).toInt();
-    Settings::values.frame_limit_custom = ReadSetting(QStringLiteral("frame_limit"), 100).toInt();
+    Settings::values.use_frame_limit_alternate =
+        ReadSetting(QStringLiteral("use_frame_limit_alternate"), false).toBool();
+    Settings::values.frame_limit_alternate =
+        ReadSetting(QStringLiteral("frame_limit_alternate"), 200).toInt();
 
     Settings::values.bg_red = ReadSetting(QStringLiteral("bg_red"), 0.0).toFloat();
     Settings::values.bg_green = ReadSetting(QStringLiteral("bg_green"), 0.0).toFloat();
@@ -932,7 +935,11 @@ void Config::SaveRendererValues() {
     WriteSetting(QStringLiteral("use_vsync_new"), Settings::values.use_vsync_new, true);
     WriteSetting(QStringLiteral("resolution_factor"), Settings::values.resolution_factor, 1);
     WriteSetting(QStringLiteral("use_frame_limit"), Settings::values.use_frame_limit, true);
-    WriteSetting(QStringLiteral("frame_limit"), Settings::values.frame_limit_custom, 100);
+    WriteSetting(QStringLiteral("frame_limit"), Settings::values.frame_limit, 100);
+    WriteSetting(QStringLiteral("use_frame_limit_alternate"),
+                 Settings::values.use_frame_limit_alternate, false);
+    WriteSetting(QStringLiteral("frame_limit_alternate"),
+                 Settings::values.frame_limit_alternate, 200);
 
     // Cast to double because Qt's written float values are not human-readable
     WriteSetting(QStringLiteral("bg_red"), (double)Settings::values.bg_red, 0.0);

src/citra_qt/configuration/configure_general.cpp

@@ -17,6 +17,9 @@ ConfigureGeneral::ConfigureGeneral(QWidget* parent)
 
     connect(ui->toggle_frame_limit, &QCheckBox::toggled, ui->frame_limit, &QSpinBox::setEnabled);
     
+    connect(ui->toggle_alternate_speed, &QCheckBox::toggled, ui->frame_limit_alternate,
+            &QSpinBox::setEnabled);
+
     ui->updateBox->setVisible(UISettings::values.updater_found);
     connect(ui->button_reset_defaults, &QPushButton::clicked, this,
             &ConfigureGeneral::ResetDefaults);
@@ -37,7 +40,11 @@ void ConfigureGeneral::SetConfiguration() {
 
     ui->toggle_frame_limit->setChecked(Settings::values.use_frame_limit);
     ui->frame_limit->setEnabled(ui->toggle_frame_limit->isChecked());
-    ui->frame_limit->setValue(Settings::values.frame_limit_custom);
+    ui->frame_limit->setValue(Settings::values.frame_limit);
+
+    ui->toggle_alternate_speed->setChecked(Settings::values.use_frame_limit_alternate);
+    ui->frame_limit_alternate->setEnabled(ui->toggle_alternate_speed->isChecked());
+    ui->frame_limit_alternate->setValue(Settings::values.frame_limit_alternate);
 }
 
 void ConfigureGeneral::ResetDefaults() {
@@ -64,7 +71,10 @@ void ConfigureGeneral::ApplyConfiguration() {
     Settings::values.region_value = ui->region_combobox->currentIndex() - 1;
 
     Settings::values.use_frame_limit = ui->toggle_frame_limit->isChecked();
-    Settings::values.frame_limit_custom = ui->frame_limit->value();
+    Settings::values.frame_limit = ui->frame_limit->value();
+
+    Settings::values.use_frame_limit_alternate = ui->toggle_alternate_speed->isChecked();
+    Settings::values.frame_limit_alternate = ui->frame_limit_alternate->value();
 }
 
 void ConfigureGeneral::RetranslateUI() {

src/citra_qt/configuration/configure_general.ui

@@ -82,6 +82,13 @@
           </property>
          </widget>
         </item>
+        <item row="2" column="0">
+         <widget class="QLabel" name="toggle_alternate_speed">
+          <property name="text">
+           <string>Alternate Speed Limit</string>
+          </property>
+         </widget>
+        </item>
         <item row="0" column="0">
          <widget class="QLabel" name="label">
           <property name="text">
@@ -149,6 +156,22 @@
           </property>
          </widget>
         </item>
+        <item row="2" column="1">
+         <widget class="QSpinBox" name="frame_limit_alternate">
+          <property name="suffix">
+           <string>%</string>
+          </property>
+          <property name="minimum">
+           <number>1</number>
+          </property>
+          <property name="maximum">
+           <number>9999</number>
+          </property>
+          <property name="value">
+           <number>200</number>
+          </property>
+         </widget>
+        </item>
        </layout>
       </widget>
      </item>

src/citra_qt/main.cpp

@@ -492,20 +492,16 @@ void GMainWindow::InitializeHotkeys() {
                 }
             });
     connect(hotkey_registry.GetHotkey(main_window, QStringLiteral("Toggle Speed Limit"), this),
-            &QShortcut::activated, this, [&] {
-                if (Settings::values.frame_limit != 100) {
-                    Settings::values.frame_limit = 100;
-                    UpdateStatusBar();
-                } else {
-                    Settings::values.frame_limit = Settings::values.frame_limit_custom;
-                    UpdateStatusBar();
-                }
-            });
-    connect(hotkey_registry.GetHotkey(main_window, QStringLiteral("Unthrottle"), this),
             &QShortcut::activated, this, [&] {
                 Settings::values.use_frame_limit = !Settings::values.use_frame_limit;
                 UpdateStatusBar();
             });
+    connect(hotkey_registry.GetHotkey(main_window, QStringLiteral("Toggle Alternate Speed"), this),
+            &QShortcut::activated, this, [&] {
+                Settings::values.use_frame_limit_alternate =
+                    !Settings::values.use_frame_limit_alternate;
+                UpdateStatusBar();
+            });
     connect(hotkey_registry.GetHotkey(main_window, QStringLiteral("Toggle Texture Dumping"), this),
             &QShortcut::activated, this,
             [&] { Settings::values.dump_textures = !Settings::values.dump_textures; });
@@ -514,23 +510,31 @@ void GMainWindow::InitializeHotkeys() {
     static constexpr u16 SPEED_LIMIT_STEP = 5;
     connect(hotkey_registry.GetHotkey(main_window, QStringLiteral("Increase Speed Limit"), this),
             &QShortcut::activated, this, [&] {
-                if (Settings::values.frame_limit_custom < 9999 - SPEED_LIMIT_STEP) {
+                if (Settings::values.use_frame_limit_alternate) {
-                    Settings::values.frame_limit_custom += SPEED_LIMIT_STEP;
+                    if (Settings::values.frame_limit_alternate < 9999 - SPEED_LIMIT_STEP) {
-                    if (Settings::values.frame_limit != 100) {
+                    Settings::values.frame_limit_alternate += SPEED_LIMIT_STEP;
-                        Settings::values.frame_limit = Settings::values.frame_limit_custom;
-                    }
                     UpdateStatusBar();
                     }
+                } else {
+                    if (Settings::values.frame_limit < 9999 - SPEED_LIMIT_STEP) {
+                    Settings::values.frame_limit += SPEED_LIMIT_STEP;
+                    UpdateStatusBar();
+                    }
+                }
             });
     connect(hotkey_registry.GetHotkey(main_window, QStringLiteral("Decrease Speed Limit"), this),
             &QShortcut::activated, this, [&] {
-                if (Settings::values.frame_limit_custom > SPEED_LIMIT_STEP) {
+                if (Settings::values.use_frame_limit_alternate) {
-                    Settings::values.frame_limit_custom -= SPEED_LIMIT_STEP;
+                    if (Settings::values.frame_limit_alternate > SPEED_LIMIT_STEP) {
-                    if (Settings::values.frame_limit != 100) {
+                    Settings::values.frame_limit_alternate -= SPEED_LIMIT_STEP;
-                        Settings::values.frame_limit = Settings::values.frame_limit_custom;
-                    }
                     UpdateStatusBar();
                     }
+                } else {
+                    if (Settings::values.frame_limit > SPEED_LIMIT_STEP) {
+                    Settings::values.frame_limit -= SPEED_LIMIT_STEP;
+                    UpdateStatusBar();
+                    }
+                }
             });
     connect(hotkey_registry.GetHotkey(main_window, QStringLiteral("Toggle Frame Advancing"), this),
             &QShortcut::activated, ui.action_Enable_Frame_Advancing, &QAction::trigger);
@@ -2038,9 +2042,16 @@ void GMainWindow::UpdateStatusBar() {
     auto results = Core::System::GetInstance().GetAndResetPerfStats();
 
     if (Settings::values.use_frame_limit) {
+        if (Settings::values.use_frame_limit_alternate)
+        {
+            emu_speed_label->setText(tr("Speed: %1% / %2%")
+                                     .arg(results.emulation_speed * 100.0, 0, 'f', 0)
+                                     .arg(Settings::values.frame_limit_alternate));
+        } else {
             emu_speed_label->setText(tr("Speed: %1% / %2%")
                                      .arg(results.emulation_speed * 100.0, 0, 'f', 0)
                                      .arg(Settings::values.frame_limit));
+        }
     } else {
         emu_speed_label->setText(tr("Speed: %1%").arg(results.emulation_speed * 100.0, 0, 'f', 0));
     }

src/core/perf_stats.cpp

@@ -140,6 +140,10 @@ void FrameLimiter::DoFrameLimiting(microseconds current_system_time_us) {
     auto now = Clock::now();
     double sleep_scale = Settings::values.frame_limit / 100.0;
 
+    if (Settings::values.use_frame_limit_alternate) {
+        sleep_scale = Settings::values.frame_limit_alternate / 100.0;
+    }
+
     // Max lag caused by slow frames. Shouldn't be more than the length of a frame at the current
     // speed percent or it will clamp too much and prevent this from properly limiting to that
     // percent. High values means it'll take longer after a slow frame to recover and start limiting

src/core/settings.cpp

@@ -83,6 +83,8 @@ void LogSettings() {
     LogSetting("Renderer_UseResolutionFactor", Settings::values.resolution_factor);
     LogSetting("Renderer_UseFrameLimit", Settings::values.use_frame_limit);
     LogSetting("Renderer_FrameLimit", Settings::values.frame_limit);
+    LogSetting("Renderer_UseFrameLimitAlternate", Settings::values.use_frame_limit_alternate);
+    LogSetting("Renderer_FrameLimitAlternate", Settings::values.frame_limit_alternate);
     LogSetting("Renderer_PostProcessingShader", Settings::values.pp_shader_name);
     LogSetting("Renderer_FilterMode", Settings::values.filter_mode);
     LogSetting("Renderer_TextureFilterName", Settings::values.texture_filter_name);

src/core/settings.h

@@ -147,8 +147,9 @@ struct Values {
     bool use_shader_jit;
     u16 resolution_factor;
     bool use_frame_limit;
+    bool use_frame_limit_alternate;
     u16 frame_limit;
-    u16 frame_limit_custom;
+    u16 frame_limit_alternate;
     std::string texture_filter_name;
 
     LayoutOption layout_option;

src/core/telemetry_session.cpp

@@ -168,6 +168,10 @@ void TelemetrySession::AddInitialInfo(Loader::AppLoader& app_loader) {
     AddField(Telemetry::FieldType::UserConfig, "Renderer_UseFrameLimit",
              Settings::values.use_frame_limit);
     AddField(Telemetry::FieldType::UserConfig, "Renderer_FrameLimit", Settings::values.frame_limit);
+    AddField(Telemetry::FieldType::UserConfig, "Renderer_UseFrameLimitAlternate",
+             Settings::values.use_frame_limit_alternate);
+    AddField(Telemetry::FieldType::UserConfig, "Renderer_FrameLimitAlternate",
+             Settings::values.frame_limit_alternate);
     AddField(Telemetry::FieldType::UserConfig, "Renderer_UseHwRenderer",
              Settings::values.use_hw_renderer);
     AddField(Telemetry::FieldType::UserConfig, "Renderer_UseHwShader",