从低版本（3.9.7）升级到3.9.11，保存图片到相册没问题。 之后卸载微信，不保留数据，重新安装，再次下载多图会导致闪退。 [图片] 保存到相册代码如下： // 去掉图片链接所带参数   getOriginImgUrl(url) {     return url.split('?')[0];   },   getPhotosAlbumAuthorize() {     return new Promise((resolve, reject) => {       wx.getSetting({         success: (res) => {           //检查是否有访问相册的权限，如果没有则通过wx.authorize方法授权           if (!res.authSetting['scope.writePhotosAlbum']) {             console.log('没有获取授权');             wx.authorize({               scope: 'scope.writePhotosAlbum',               success: () => {                 //用户点击允许获取相册信息后进入下载保存逻辑                 resolve();               },               fail() {                 reject();                 wx.showModal({                   title: '未获取相册授权',                   content: '请点击右上角胶囊按钮，打开设置，将相册权限打开',                   confirmText: '确定',                   showCancel: false                 });               }             });           } else {             console.log('已获取授权');             resolve();           }         }       });     });   },   handleDownload() {     this.getPhotosAlbumAuthorize().then(() => {       this.sequenceDownload();     }).catch(() => {});   },   sequenceDownload() {     const filesUrl = this.data.banners.map(url => {       return this.getOriginImgUrl(url);     });     const proInfo = this.data.detail.description;     if (filesUrl.length) {       wx.showLoading({         title: '下载中',       });       const allPromises = filesUrl.map(url => this.downloadFile(url));       Promise.all(allPromises).then(() => {         wx.hideLoading({           noConflict: true         });         // 复制商品描述到剪切板         wx.setClipboardData({           data: proInfo,           success () {}         });         //保存成功弹出提示，告知一下用户         wx.showModal({           title: '提示',           content: '已保存到相册，商品描述已经复制到剪切板',           confirmColor: '#E0B77A',           confirmText: '知道了',           showCancel: false         });       }).catch(err => {         wx.hideLoading({           noConflict: true         });         console.log(err);         wx.showToast({           icon: 'none',           title: '下载保存失败，请重试'         });       });     }   },   getFileName(url) {     const splitArr = url.split('/');     return splitArr[splitArr.length - 1];   },   downloadFile(url) {     return new Promise((resolve, reject) => {       wx.downloadFile({         url: url,         success: (res) => {           var savePath = wx.env.USER_DATA_PATH + '/' + this.getFileName(url);           const fs = wx.getFileSystemManager();           fs.saveFile({ //下载成功后保存到本地             tempFilePath: res.tempFilePath,             filePath: savePath,             success() {               //获取了相册的访问权限，使用 wx.saveImageToPhotosAlbum 将图片保存到相册中               wx.saveImageToPhotosAlbum({                 filePath: savePath,                 success: () => {                   resolve();                   // 保存完成后删除本地缓存文件                   fs.unlink({                     filePath: savePath,                     fail(errmsg) {                       console.log('remove file fail:', errmsg);                     }                   });                 },                 fail(err) {                   reject(err);                 }               });             },             fail(err2) {               reject(err2);             }           });         },         fail: (err) => {           console.log('download error', err);           reject(err);         }       });     });   },

[图片] 近2周性能数据远好于均值但性能评估结果一般，大致的问题是什么？优秀结果粗略准则是否可以披露，或者优于均值多少？如何进一步排查问题？