Running a modern version like 1.16.5 in a browser can be taxing. To get the best FPS:
Since Eaglercraft is a fan-made port, it isn't hosted on an official "main" website. Use these tips to find a working link: Search for Replays/Mirrors
AutoCrystal is the main reason people use EagleCraft. Here’s how to configure it for PvP servers:
: Expected support for WebGL 2.0 to enable better dynamic lighting and shader performance on low-end hardware like Chromebooks. Current Ways to "Play" 1.16.5