diff --git a/src/kernel/compsor-fallback.c b/src/kernel/compsor-fallback.c
index 6f294483..fe743dfc 100644
--- a/src/kernel/compsor-fallback.c
+++ b/src/kernel/compsor-fallback.c
@@ -1135,14 +1135,17 @@ static void transit_to_layer (CompositorCtxt* ctxt, MG_Layer* to_layer)
 
             _DBG_PRINTF ("cp.percent: %f, cp.scale: %f\n", cp.percent, cp.scale);
             t_ms = composite_layers (ctxt, layers, 2, &cp);
-            if (t_ms > 50)
+            if (t_ms >= 20) {
                 _WRN_PRINTF ("Too slow to composite layers: %u\n", t_ms);
+                cp.scale -= 0.04f;
+            }
+            else {
+                usleep ((20 - t_ms) * 1000);
+                cp.scale -= 0.02f;
+            }
 
             total_time_ms += t_ms;
             total_times++;
-
-            usleep (10 * 1000);
-            cp.scale -= 0.02f;
         }
 
         // Step 2) Move to the new topmost layer
@@ -1155,14 +1158,17 @@ static void transit_to_layer (CompositorCtxt* ctxt, MG_Layer* to_layer)
 
             _DBG_PRINTF ("cp.percent: %f, cp.scale: %f\n", cp.percent, cp.scale);
             t_ms = composite_layers (ctxt, layers, 2, &cp);
-            if (t_ms > 50)
+            if (t_ms >= 20) {
                 _WRN_PRINTF ("Too slow to composite layers: %u\n", t_ms);
+                cp.percent -= 9.0f;
+            }
+            else {
+                usleep ((20 - t_ms) * 1000);
+                cp.percent -= 4.5f;
+            }
 
             total_time_ms += t_ms;
             total_times++;
-
-            usleep (20 * 1000);
-            cp.percent -= 4.5f;
         }
 
         // Step 3) Zoom in the new topmost layer
@@ -1175,14 +1181,17 @@ static void transit_to_layer (CompositorCtxt* ctxt, MG_Layer* to_layer)
 
             _DBG_PRINTF ("cp.percent: %f, cp.scale: %f\n", cp.percent, cp.scale);
             t_ms = composite_layers (ctxt, layers, 2, &cp);
-            if (t_ms > 50)
+            if (t_ms >= 20) {
                 _WRN_PRINTF ("Too slow to composite layers: %u\n", t_ms);
+                cp.scale += 0.04f;
+            }
+            else {
+                usleep ((20 - t_ms) * 1000);
+                cp.scale += 0.02f;
+            }
 
             total_time_ms += t_ms;
             total_times++;
-
-            usleep (10 * 1000);
-            cp.scale += 0.02f;
         }
     }
     else {
@@ -1198,14 +1207,17 @@ static void transit_to_layer (CompositorCtxt* ctxt, MG_Layer* to_layer)
 
             _DBG_PRINTF ("cp.percent: %f, cp.scale: %f\n", cp.percent, cp.scale);
             t_ms = composite_layers (ctxt, layers, 2, &cp);
-            if (t_ms > 50)
+            if (t_ms >= 20) {
                 _WRN_PRINTF ("Too slow to composite layers: %u\n", t_ms);
+                cp.scale -= 0.04f;
+            }
+            else {
+                usleep ((20 - t_ms) * 1000);
+                cp.scale -= 0.02f;
+            }
 
             total_time_ms += t_ms;
             total_times++;
-
-            usleep (10 * 1000);
-            cp.scale -= 0.02f;
         }
 
         // Step 2) Move the current topmost layer
@@ -1217,14 +1229,17 @@ static void transit_to_layer (CompositorCtxt* ctxt, MG_Layer* to_layer)
 
             _DBG_PRINTF ("cp.percent: %f, cp.scale: %f\n", cp.percent, cp.scale);
             t_ms = composite_layers (ctxt, layers, 2, &cp);
-            if (t_ms > 50)
+            if (t_ms >= 20) {
                 _WRN_PRINTF ("Too slow to composite layers: %u\n", t_ms);
+                cp.percent += 9.0f;
+            }
+            else {
+                usleep ((20 - t_ms) * 1000);
+                cp.percent += 4.5f;
+            }
 
             total_time_ms += t_ms;
             total_times++;
-
-            usleep (20 * 1000);
-            cp.percent += 4.5f;
         }
 
         // Step 3) Zoom in the new topmost layer
@@ -1237,14 +1252,17 @@ static void transit_to_layer (CompositorCtxt* ctxt, MG_Layer* to_layer)
 
             _DBG_PRINTF ("cp.percent: %f, cp.scale: %f\n", cp.percent, cp.scale);
             t_ms = composite_layers (ctxt, layers, 2, &cp);
-            if (t_ms > 50)
+            if (t_ms >= 20) {
                 _WRN_PRINTF ("Too slow to composite layers: %u\n", t_ms);
+                cp.scale += 0.04f;
+            }
+            else {
+                usleep ((20 - t_ms) * 1000);
+                cp.scale += 0.02f;
+            }
 
             total_time_ms += t_ms;
             total_times++;
-
-            usleep (10 * 1000);
-            cp.scale += 0.02f;
         }
     }