add menu throttle for 120+Hz displays

general.h

@@ -205,6 +205,7 @@ struct settings
       bool pause_libretro;
       bool mouse_enable;
       bool timedate_enable;
+      bool throttle;
       char wallpaper[PATH_MAX_LENGTH];
 
       struct

menu/menu.c

@@ -433,6 +433,9 @@ int menu_iterate(retro_input_t input,
    if (driver.menu_ctx && driver.menu_ctx->input_postprocess)
       driver.menu_ctx->input_postprocess(input, old_input);
 
+   if (g_settings.menu.throttle)
+      rarch_sleep(15);
+
    if (ret)
       return -1;
 

retroarch.cfg

@@ -595,10 +595,13 @@
 # menu_mouse_enable = false
 
 # Shows current date and/or time inside menu.
-# menu_timedate_enable = true 
+# menu_timedate_enable = true
+
+# Throttle the menu to ~60 FPS instead of using v-sync. Useful for 120+Hz monitors.
+# menu_throttle = false
 
 # Path to a .png image to set as menu wallpaper.
-# menu_wallpaper = 
+# menu_wallpaper =
 
 # Wrap-around toe beginning and/or end if boundary of list reached horizontally
 # menu_navigation_wraparound_horizontal_enable = false

settings.c

@@ -485,6 +485,7 @@ static void config_set_defaults(void)
    g_settings.menu.pause_libretro = true;
    g_settings.menu.mouse_enable = false;
    g_settings.menu.timedate_enable = true;
+   g_settings.menu.throttle = false;
    *g_settings.menu.wallpaper = '\0';
    g_settings.menu.navigation.wraparound.horizontal_enable = true;
    g_settings.menu.navigation.wraparound.vertical_enable = true;
@@ -1875,6 +1876,7 @@ bool config_save_file(const char *path)
    config_set_bool(conf,"menu_pause_libretro", g_settings.menu.pause_libretro);
    config_set_bool(conf,"menu_mouse_enable", g_settings.menu.mouse_enable);
    config_set_bool(conf,"menu_timedate_enable", g_settings.menu.timedate_enable);
+   config_set_bool(conf,"menu_throttle", g_settings.menu.throttle);
    config_set_path(conf, "menu_wallpaper", g_settings.menu.wallpaper);
 #endif
    config_set_bool(conf,  "video_vsync", g_settings.video.vsync);

settings_data.c

@@ -5240,6 +5240,18 @@ static bool setting_data_append_list_menu_options(
          general_write_handler,
          general_read_handler);
 
+   CONFIG_BOOL(
+         g_settings.menu.throttle,
+         "menu_throttle",
+         "Throttle menu speed",
+         false,
+         "OFF",
+         "ON",
+         group_info.name,
+         subgroup_info.name,
+         general_write_handler,
+         general_read_handler);
+
    END_SUB_GROUP(list, list_info);
 
    END_GROUP(list, list_info);