在前端创建FeatureLayer并添加数据的方式，有什么优化浏览速度的方法？

在前端创建FeatureLayer并添加数据的方式 是指例如如下代码：
lyr = new FeatureLayer({
source: graphics, // autocast as an array of esri/Graphic
// create an instance of esri/layers/support/Field for each field object
fields: fields, // This is required when creating a layer from Graphics
objectIdField: "oid1", // This must be defined when creating a layer from Graphics
renderer: simpleRenderer, // set the visualization on the layer
spatialReference: {
wkid: 102100
},
geometryType: "point", // Must be set when creating a layer from Graphics
//popupTemplate: pTemplate
});

目前做了个试验，5000个点有点卡，8000就比较卡而且影响到使用了，请求性能优化方案，谢谢！！