The browser could not allocate enough menmory for the WebGL

unity 发布WebGL后浏览器报The browser could not allocate enough menmory for the WebGL content .If you are the developer of this content ,try allocating less memory to your WebGL build in the WebGL player settings

发布的是WebGL的内容，请问遇到这种问题怎么解决？
原来调整 WebGL Memory Size 为128，小了才调整到的256，结果就出现上面错误。有哪位朋友遇到过这种问题，求支招。