diff --git a/src/uix/morfo/components/checkbox.ts b/src/uix/morfo/components/checkbox.ts
index a133e4a2e..4f8017761 100644
--- a/src/uix/morfo/components/checkbox.ts
+++ b/src/uix/morfo/components/checkbox.ts
@@ -22,7 +22,10 @@ export const checkboxMorfo = {
 				verb: 'toggle',
 				target: v.partRef('provider'),
 				intent: 'affirm',
-				sequence: 'pre'
+				// 'post': flip the checked state FIRST (data-state updates
+				// immediately), then emit the celebratory pulse. 'pre' made the
+				// functional check wait for the perceptual hold (~240ms) → laggy.
+				sequence: 'post'
 			}
 		},
 		{
@@ -37,7 +40,7 @@ export const checkboxMorfo = {
 				verb: 'toggle',
 				target: v.partRef('provider'),
 				intent: 'neutral',
-				sequence: 'pre'
+				sequence: 'post'
 			}
 		}
 	],