Support dynamic tick rates

src/js/states/main_menu.js

@@ -179,7 +179,12 @@ export class MainMenuState extends GameState {
         this.trackClicks(qs(".mainContainer .importButton"), this.requestImportSavegame);
 
         if (G_IS_DEV && globalConfig.debug.fastGameEnter) {
-            this.onPlayButtonClicked();
+            const games = this.app.savegameMgr.getSavegamesMetaData();
+            if (games.length > 0) {
+                this.resumeGame(games[0]);
+            } else {
+                this.onPlayButtonClicked();
+            }
         }
 
         // Initialize video