diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4d6b0c498..7b043cd3ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -34,6 +34,7 @@ You should also include the user name that made the change.
 - avatarBlurHash/bannerBlurHashの型をstringに限定
 - APオブジェクトを入力してフェッチする機能とユーザーやノートの検索機能を分離
 - ナビゲーションバーの項目に「プロフィール」を追加できるように
+- サーバーのタイムライン取得時のパフォーマンスを改善
 - AiScriptを0.13.1に更新
 
 ### Bugfixes
diff --git a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
index 3802ae540c..8a7ec65ab4 100644
--- a/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/hybrid-timeline.ts
@@ -8,6 +8,7 @@ import { MetaService } from '@/core/MetaService.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { DI } from '@/di-symbols.js';
 import { RoleService } from '@/core/RoleService.js';
+import { IdService } from '@/core/IdService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -69,6 +70,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private metaService: MetaService,
 		private roleService: RoleService,
 		private activeUsersChart: ActiveUsersChart,
+		private idService: IdService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const policies = await this.roleService.getUserPolicies(me.id);
@@ -83,7 +85,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
 				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-				.andWhere('note.createdAt > :minDate', { minDate: new Date(Date.now() - (1000 * 60 * 60 * 24 * 30)) }) // 30日前まで
+				.andWhere('note.id > :minId', { minId: this.idService.genId(new Date(Date.now() - (1000 * 60 * 60 * 24 * 10))) }) // 10日前まで
 				.andWhere(new Brackets(qb => {
 					qb.where(`((note.userId IN (${ followingQuery.getQuery() })) OR (note.userId = :meId))`, { meId: me.id })
 						.orWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)');
diff --git a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
index 3810016952..8c1c07a9f4 100644
--- a/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/local-timeline.ts
@@ -8,6 +8,7 @@ import { MetaService } from '@/core/MetaService.js';
 import ActiveUsersChart from '@/core/chart/charts/active-users.js';
 import { DI } from '@/di-symbols.js';
 import { RoleService } from '@/core/RoleService.js';
+import { IdService } from '@/core/IdService.js';
 import { ApiError } from '../../error.js';
 
 export const meta = {
@@ -65,6 +66,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private metaService: MetaService,
 		private roleService: RoleService,
 		private activeUsersChart: ActiveUsersChart,
+		private idService: IdService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const policies = await this.roleService.getUserPolicies(me ? me.id : null);
@@ -75,7 +77,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			//#region Construct query
 			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
 				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-				.andWhere('note.createdAt > :minDate', { minDate: new Date(Date.now() - (1000 * 60 * 60 * 24 * 30)) }) // 30日前まで
+				.andWhere('note.id > :minId', { minId: this.idService.genId(new Date(Date.now() - (1000 * 60 * 60 * 24 * 10))) }) // 10日前まで
 				.andWhere('(note.visibility = \'public\') AND (note.userHost IS NULL)')
 				.innerJoinAndSelect('note.user', 'user')
 				.leftJoinAndSelect('user.avatar', 'avatar')
diff --git a/packages/backend/src/server/api/endpoints/notes/timeline.ts b/packages/backend/src/server/api/endpoints/notes/timeline.ts
index 5ce436ee1c..d9e72d2603 100644
--- a/packages/backend/src/server/api/endpoints/notes/timeline.ts
+++ b/packages/backend/src/server/api/endpoints/notes/timeline.ts
@@ -6,6 +6,7 @@ import { QueryService } from '@/core/QueryService.js';
 import ActiveUsersChart from '@/core/chart/charts/active-users.js';
 import { NoteEntityService } from '@/core/entities/NoteEntityService.js';
 import { DI } from '@/di-symbols.js';
+import { IdService } from '@/core/IdService.js';
 
 export const meta = {
 	tags: ['notes'],
@@ -56,6 +57,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		private noteEntityService: NoteEntityService,
 		private queryService: QueryService,
 		private activeUsersChart: ActiveUsersChart,
+		private idService: IdService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const followees = await this.followingsRepository.createQueryBuilder('following')
@@ -66,7 +68,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			//#region Construct query
 			const query = this.queryService.makePaginationQuery(this.notesRepository.createQueryBuilder('note'),
 				ps.sinceId, ps.untilId, ps.sinceDate, ps.untilDate)
-				.andWhere('note.createdAt > :minDate', { minDate: new Date(Date.now() - (1000 * 60 * 60 * 24 * 30)) }) // 30日前まで
+				.andWhere('note.id > :minId', { minId: this.idService.genId(new Date(Date.now() - (1000 * 60 * 60 * 24 * 10))) }) // 10日前まで
 				.innerJoinAndSelect('note.user', 'user')
 				.leftJoinAndSelect('user.avatar', 'avatar')
 				.leftJoinAndSelect('user.banner', 'banner')