diff --git a/src/lv_api_map.h b/src/lv_api_map.h
index 904dcf93d..fde6f1633 100644
--- a/src/lv_api_map.h
+++ b/src/lv_api_map.h
@@ -31,18 +31,6 @@ extern "C" {
  * V6.0 COMPATIBILITY
  *--------------------*/
 
-
-#if LV_USE_ARC
-
-
-static inline void lv_arc_set_angles(lv_obj_t * arc, uint16_t start, uint16_t end)
-{
-    lv_arc_set_start_angle(arc, start);
-    lv_arc_set_end_angle(arc, end);
-}
-
-#endif
-
 #if LV_USE_CHART
 
 #define lv_chart_get_point_cnt lv_chart_get_point_count
diff --git a/src/lv_core/lv_refr.c b/src/lv_core/lv_refr.c
index 77fd95f13..c017491d6 100644
--- a/src/lv_core/lv_refr.c
+++ b/src/lv_core/lv_refr.c
@@ -539,7 +539,7 @@ static void lv_refr_obj(lv_obj_t * obj, const lv_area_t * mask_ori_p)
         style_debug.body.grad_color = debug_color;
         style_debug.body.border.width = 2;
         style_debug.body.border.color.full = (debug_color.full + 0x13) * 9;
-        lv_draw_rect(&obj_ext_mask, &obj_ext_mask, &style_debug, LV_OPA_50);
+        lv_draw_rect(&obj_ext_mask, &obj_ext_mask, &style_debug, LV_OPA_20);
         debug_color.full *= 17;
         debug_color.full += 0xA1;
 #endif
diff --git a/src/lv_core/lv_style.c b/src/lv_core/lv_style.c
index a2f69ecf5..c8a116632 100644
--- a/src/lv_core/lv_style.c
+++ b/src/lv_core/lv_style.c
@@ -117,7 +117,7 @@ void lv_style_init(void)
 
     lv_style_scr.line.opa     = LV_OPA_COVER;
     lv_style_scr.line.color   = lv_color_make(0x20, 0x20, 0x20);
-    lv_style_scr.line.width   = 2;
+    lv_style_scr.line.width   = 40;
     lv_style_scr.line.rounded = 0;
     lv_style_scr.line.blend_mode = LV_BLEND_MODE_NORMAL;
 
diff --git a/src/lv_objx/lv_arc.c b/src/lv_objx/lv_arc.c
index 5e6b1ab10..1c8df09c5 100644
--- a/src/lv_objx/lv_arc.c
+++ b/src/lv_objx/lv_arc.c
@@ -128,7 +128,6 @@ void lv_arc_set_start_angle(lv_obj_t * arc, int16_t start)
     lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
 
     if(start > 360) start -= 360;
-    if(start < 0) start += 360;
 
     ext->angle_start = start;
 
@@ -147,13 +146,35 @@ void lv_arc_set_end_angle(lv_obj_t * arc, int16_t end)
     lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
 
     if(end > 360) end -= 360;
-    if(end < 0) end += 360;
 
     ext->angle_end= end;
 
     lv_obj_invalidate(arc);
 }
 
+
+/**
+ * Set the start and end angles
+ * @param arc pointer to an arc object
+ * @param start the start angle
+ * @param end the end angle
+ */
+void lv_arc_set_angles(lv_obj_t * arc, uint16_t start, uint16_t end)
+{
+    LV_ASSERT_OBJ(arc, LV_OBJX_NAME);
+
+    lv_arc_ext_t * ext = lv_obj_get_ext_attr(arc);
+
+    if(end > 360) end -= 360;
+
+    if(start > 360) start -= 360;
+
+    ext->angle_start = start;
+    ext->angle_end = end;
+
+    lv_obj_invalidate(arc);
+}
+
 /**
  * Set a style of a arc.
  * @param arc pointer to arc object
@@ -291,4 +312,32 @@ static lv_res_t lv_arc_signal(lv_obj_t * arc, lv_signal_t sign, void * param)
     return res;
 }
 
+
+static void inv_arc_area(lv_obj_t * arc, uint16_t start_angle, uint16_t end_angle)
+{
+    uint8_t start_quarter = start_angle / 90;
+    uint8_t end_quarter = end_angle / 90;
+    lv_coord_t r       = (LV_MATH_MIN(lv_obj_get_width(arc), lv_obj_get_height(arc))) / 2;
+    lv_coord_t x       = arc->coords.x1 + lv_obj_get_width(arc) / 2;
+    lv_coord_t y       = arc->coords.y1 + lv_obj_get_height(arc) / 2;
+    const lv_style_t style = lv_arc_get_style(arc, LV_ARC_STYLE_MAIN);
+    lv_coord_t w       = style->line.width;
+    lv_area_t inv_area;
+
+    if(start_quarter == end_quarter) {
+        if(start_quarter == 3) {
+            /*Small arc here*/
+            inv_area.x1 = x + ((lv_trigo_sin(start_angle + 90) * (r - q->width)) >> LV_TRIGO_SHIFT);
+            inv_area.y1 = y + ((lv_trigo_sin(start_angle) * (r)) >> LV_TRIGO_SHIFT);
+
+            inv_area.x2 = x + ((lv_trigo_sin(end_angle + 90) * (r)) >> LV_TRIGO_SHIFT);
+            inv_area.y2 = y + ((lv_trigo_sin(end_angle) * (r - q->width)) >> LV_TRIGO_SHIFT);
+
+                    bool ok = lv_area_intersect(&quarter_area, &quarter_area, q->clip_area);
+                    if(ok) lv_draw_rect(q->draw_area, &quarter_area, q->style, q->opa_scale);
+        }
+    }
+
+}
+
 #endif
diff --git a/src/lv_objx/lv_arc.h b/src/lv_objx/lv_arc.h
index 1579f8baa..5717fa59a 100644
--- a/src/lv_objx/lv_arc.h
+++ b/src/lv_objx/lv_arc.h
@@ -74,6 +74,15 @@ void lv_arc_set_start_angle(lv_obj_t * arc, int16_t start);
  */
 void lv_arc_set_end_angle(lv_obj_t * arc, int16_t end);
 
+/**
+ * Set the start and end angles
+ * @param arc pointer to an arc object
+ * @param start the start angle
+ * @param end the end angle
+ */
+void lv_arc_set_angles(lv_obj_t * arc, uint16_t start, uint16_t end);
+
+
 /**
  * Set a style of a arc.
  * @param arc pointer to arc object
diff --git a/src/lv_objx/lv_preload.c b/src/lv_objx/lv_preload.c
index b00bb8cb5..fade599ed 100644
--- a/src/lv_objx/lv_preload.c
+++ b/src/lv_objx/lv_preload.c
@@ -87,7 +87,7 @@ lv_obj_t * lv_preload_create(lv_obj_t * par, const lv_obj_t * copy)
     ext->arc_length = LV_PRELOAD_DEF_ARC_LENGTH;
     ext->anim_type  = LV_PRELOAD_DEF_ANIM;
     ext->anim_dir   = LV_PRELOAD_DIR_FORWARD;
-    ext->time = LV_PRELOAD_DEF_SPIN_TIME;
+    ext->time = LV_PRELOAD_DEF_SPIN_TIME * 5;
 
     /*The signal and design functions are not copied so set them here*/
     lv_obj_set_signal_cb(new_preload, lv_preload_signal);
@@ -362,8 +362,7 @@ void lv_preload_spinner_anim(void * ptr, lv_anim_value_t val)
     angle_start = angle_start % 360;
     angle_end   = angle_end % 360;
 
-    lv_arc_set_start_angle(preload, angle_start);
-    lv_arc_set_end_angle(preload, angle_end);
+    lv_arc_set_angles(preload, angle_start, angle_end);
 }
 
 /**********************