config.maxFps: scene frame-rate cap (default 30, 0 = free; motion stays time-based)

config.js

@@ -87,6 +87,9 @@ window.CONFIG = {
     // render the clouds/map shader at reduced resolution and upscale
     // via CSS - use it if fps is low (GPU-bound) despite a quiet CPU.
     renderScale: 1,
+    // WebGL scene frame cap (default 30; 0 = free-running/vsync). All
+    // scene motion is time-based, so the cap only changes smoothness.
+    maxFps: 30,
     location: {
         // Latitude and longitude for sun/moon calculations
         // Passau (vorher: Muenchen 48.1374/11.5755, Innsbruck 47.2692/11.4041)