As noticed, this reverts big_clock to the pre-subsampling state.

include/effect_big_clock.h

@@ -8,10 +8,9 @@ private:
     CRGB _color_seconds = CRGB(0xFF0000);
 
     void _draw_seconds();
-    void _draw_border_pixel(uint8_t second, uint8_t part, CRGB* color);
+    void _draw_border_pixel(uint8_t second, CRGB* color);
 
 public:
     void loop();
     String get_name() override { return "big_clock"; }
 };
-