diff --git a/frontend/app/features/schedules/ArtifactList.tsx b/frontend/app/features/schedules/ArtifactList.tsx
index e931b64..0399e57 100644
--- a/frontend/app/features/schedules/ArtifactList.tsx
+++ b/frontend/app/features/schedules/ArtifactList.tsx
@@ -1,8 +1,13 @@
+import { memo } from "react";
+
 import { type ScheduleArtifact } from "../../services/api";
 import Icon from "../../components/common/Icon";
 import { shortHash } from "./utils";
 
-export function ArtifactList({
+// 包裹 memo 让父级 SchedulePage 在画布交互(setSelectedNodeId /
+// setSelectedEdgeId / linkSourceId 等)重渲染时,artifact 卡片不会跟着
+// 重建/重绑拖拽事件 —— 减少拖动过程中的事件重绑与列表抖动。
+function ArtifactListImpl({
   artifacts,
   keyword,
   onDrop,
@@ -77,3 +82,5 @@ export function ArtifactList({
     </section>
   );
 }
+
+export const ArtifactList = memo(ArtifactListImpl);
diff --git a/frontend/app/features/schedules/SchedulePage.tsx b/frontend/app/features/schedules/SchedulePage.tsx
index 84b5a02..c30403d 100644
--- a/frontend/app/features/schedules/SchedulePage.tsx
+++ b/frontend/app/features/schedules/SchedulePage.tsx
@@ -3,6 +3,7 @@ import {
   type FormEvent,
   memo,
   type MouseEvent as ReactMouseEvent,
+  useCallback,
   useEffect,
   useMemo,
   useRef,
@@ -307,6 +308,35 @@ export default function SchedulePage({
       : artifacts;
   }, [artifacts, artifactKeyword]);
 
+  // 稳定传给 ArtifactList 的 3 个回调,让 memo 真正生效 —— 否则父级
+  // (SchedulePage) 任何 store 字段变化都会让卡片列表重新绑定拖拽事件,
+  // 在拖动/快速 hover 时放大体感卡顿。
+  const handleArtifactDrop = useCallback(
+    (artifact: ScheduleArtifact, x: number, y: number) => {
+      useSchedulesStore.getState().addArtifactAt(artifact, x, y);
+    },
+    [],
+  );
+  const handleArtifactDoubleClick = useCallback(
+    (artifact: ScheduleArtifact) => {
+      useSchedulesStore.getState().addArtifactAt(
+        artifact,
+        90 + (schedule?.nodes.length ?? 0) * 245,
+        130,
+      );
+    },
+    [schedule],
+  );
+  const handleArtifactContextMenu = useCallback(
+    (event: ReactMouseEvent, artifact: ScheduleArtifact) => {
+      openScheduleContextMenu(
+        event as ReactMouseEvent<HTMLElement | SVGElement>,
+        { kind: "artifact", artifact },
+      );
+    },
+    [],
+  );
+
   return (
     <section className="schedule-page">
       <header className="schedule-toolbar">
@@ -364,9 +394,9 @@ export default function SchedulePage({
           <ArtifactList
             artifacts={filteredArtifacts}
             keyword={artifactKeyword}
-            onDrop={(artifact, x, y) => void useSchedulesStore.getState().addArtifactAt(artifact, x, y)}
-            onDoubleClick={(artifact) => void useSchedulesStore.getState().addArtifactAt(artifact, 90 + (schedule?.nodes.length ?? 0) * 245, 130)}
-            onContextMenu={(event, artifact) => openScheduleContextMenu(event as ReactMouseEvent<HTMLElement | SVGElement>, { kind: "artifact", artifact })}
+            onDrop={handleArtifactDrop}
+            onDoubleClick={handleArtifactDoubleClick}
+            onContextMenu={handleArtifactContextMenu}
             onKeywordChange={setArtifactKeyword}
           />
         </aside>
diff --git a/frontend/app/styles/schedule.css b/frontend/app/styles/schedule.css
index 7bf2661..e610860 100644
--- a/frontend/app/styles/schedule.css
+++ b/frontend/app/styles/schedule.css
@@ -294,10 +294,10 @@
   background: #fff;
   cursor: grab;
   user-select: none;
-  transition:
-    transform .15s ease,
-    box-shadow .15s ease,
-    border-color .15s ease;
+  /* hover 效果(border / box-shadow / transform)全部走合成层友好的属性,
+     但禁止 transition:box-shadow 是 paint 操作,在 20+ 张卡片上快速
+     划过鼠标会触发频繁重绘,导致悬浮卡顿;拖动时也会让 drag image 变重、
+     视觉上"粘"在半动画上。直接瞬变,干净利落。 */
 }
 
 .artifact-card:hover {