Use sticky honey blocks for redstone contraptions or to slow down movement.
Many 1.15.2 ports include built-in performance mods similar to Optifine to help the game run smoothly on low-end hardware like Chromebooks. How to Play Eaglercraft 1.15.2
Eaglercraft 1.15.2 is an unofficial, community-driven attempt to port the 1.15.2 Java Edition of Minecraft to the browser. Unlike the stable 1.5.2 or 1.8.8 versions maintained by the original developer, Lax1Dude, the 1.15.2 port is largely experimental and focuses on bringing modern features like bees, honey blocks, and updated game rules to browser-based gameplay.
If you manage to find a stable repository or server for this version, you can expect features from the official Minecraft 1.15.2 update :
Playing Eaglercraft 1.15.2 typically involves finding a community-hosted site or a GitHub repository that has compiled the version into an HTML file.