diff --git a/src/core/App.js b/src/core/App.js
index a71d087..56dd92e 100644
--- a/src/core/App.js
+++ b/src/core/App.js
@@ -64,7 +64,7 @@ export class App {
   _initRenderer() {
     const canvas = document.getElementById('scene');
     this.renderer = new THREE.WebGLRenderer({ canvas, antialias: true });
-    this.renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
+    this.renderer.setPixelRatio(Math.min(window.devicePixelRatio, 1.5));
     this.renderer.setSize(window.innerWidth, window.innerHeight);
     this.renderer.shadowMap.enabled = true;
     this.renderer.shadowMap.type = THREE.PCFSoftShadowMap;
diff --git a/src/scene/CesiumGlobe.js b/src/scene/CesiumGlobe.js
index b3c08dd..6b84ef6 100644
--- a/src/scene/CesiumGlobe.js
+++ b/src/scene/CesiumGlobe.js
@@ -226,7 +226,7 @@ export class CesiumGlobe {
     scene.globe.maximumScreenSpaceError = 2.0; // 默认细分，最省性能
     scene.globe.tileCacheSize = 600; // 更大的瓦片缓存，减少细节刷新
     scene.fxaa = false; // 关闭抗锯齿后处理，省一个全屏通道
-    viewer.resolutionScale = 1.5; // 1.5 倍超采样，替代 FXAA 提供更锐利的抗锯齿
+    viewer.resolutionScale = 1.0; // 关闭超采样（DPR 已提供足够分辨率），省填充率
     scene.maximumRenderTimeChange = Infinity; // 配合 requestRenderMode：静止时停止重绘，大幅省电省帧
 
     // 卫星影像
diff --git a/src/scene/binder.js b/src/scene/binder.js
index 54e2ec0..6348f7a 100644
--- a/src/scene/binder.js
+++ b/src/scene/binder.js
@@ -234,7 +234,7 @@ function makeLeatherNormalMap() {
 
 // 内侧绒面法线：密集细绒毛（高频噪点）
 function makeSuedeNormalMap() {
-  const w = 1024, h = 1280;
+  const w = 512, h = 640; // 降分辨率省 75% 逐像素计算，视觉几乎无差
   const c = document.createElement('canvas');
   c.width = w; c.height = h;
   const ctx = c.getContext('2d', { willReadFrequently: true });
diff --git a/src/utils/labels.js b/src/utils/labels.js
index 67f82b7..3688d74 100644
--- a/src/utils/labels.js
+++ b/src/utils/labels.js
@@ -1,7 +1,7 @@
 import * as THREE from 'three';
 
 // 超采样倍数：文字以更高分辨率栅格化，拉近/放大后依然清晰
-const SS = 4;
+const SS = 2;
 
 // 折行：尽量均分两行（标题较短），均分不满足时逐字折行
 function wrapText(ctx, text, maxW) {