diff --git a/CHANGELOG.md b/CHANGELOG.md
index e25096addc..b3a60736ab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,9 @@ v2025.12.0で行われた「configの`trustProxy`のデフォルト値を`false`
 ### General
 - 依存関係の更新
 
+### Server
+- Fix: コントロールパネルのジョブキューページで使用される一部APIの応答速度を改善
+
 ### Client
 - Enhance: デッキのUI説明を追加
 - Fix: バージョン表記のないPlayが正しく動作しない問題を修正  
diff --git a/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts b/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts
index f3e440b4cb..86158d7e22 100644
--- a/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts
+++ b/packages/backend/src/server/api/endpoints/admin/queue/deliver-delayed.ts
@@ -52,18 +52,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		super(meta, paramDef, async (ps, me) => {
 			const jobs = await this.deliverQueue.getJobs(['delayed']);
 
-			const res = [] as [string, number][];
+			const counts = new Map<string, number>();
 
 			for (const job of jobs) {
 				const host = new URL(job.data.to).host;
-				if (res.find(x => x[0] === host)) {
-					res.find(x => x[0] === host)![1]++;
-				} else {
-					res.push([host, 1]);
-				}
+				counts.set(host, (counts.get(host) ?? 0) + 1);
 			}
 
-			res.sort((a, b) => b[1] - a[1]);
+			const res = [...counts.entries()].sort((a, b) => b[1] - a[1]);
 
 			return res;
 		});
diff --git a/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts b/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
index e7589cba81..ad6a823b8f 100644
--- a/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
+++ b/packages/backend/src/server/api/endpoints/admin/queue/inbox-delayed.ts
@@ -52,18 +52,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		super(meta, paramDef, async (ps, me) => {
 			const jobs = await this.inboxQueue.getJobs(['delayed']);
 
-			const res = [] as [string, number][];
+			const counts = new Map<string, number>();
 
 			for (const job of jobs) {
 				const host = new URL(job.data.signature.keyId).host;
-				if (res.find(x => x[0] === host)) {
-					res.find(x => x[0] === host)![1]++;
-				} else {
-					res.push([host, 1]);
-				}
+				counts.set(host, (counts.get(host) ?? 0) + 1);
 			}
 
-			res.sort((a, b) => b[1] - a[1]);
+			const res = [...counts.entries()].sort((a, b) => b[1] - a[1]);
 
 			return res;
 		});