How to install Optifine 1.15.2 - Historical

Optifine is one of the most widely used mods on Minecraft, on EcoCityCraft it is considered one of the core mods to be using. EcoCityCraft is home to some insane builds and many users build structures with the perks of both Optifine and Shaders in mind! Optifine will definitely enhance your EcoCityCraft experience!

Where to get Optifine(top)

Your Optifine version should match the game version you are running.
You should also always use the latest stable version of Optifine.
You can go here to view the current Optifine releases and pre-releases:
https://optifine.net/downloads
Sometimes the latest version of Minecraft doesn't have full Optifine support yet, so be sure to look under "Preview versions" at the top if you don't see your game version.
Always grab the latest release.

Installing Optifine(top)