WISC / GUIDE
Make room for smoother play.
Choose the right Java runtime, keep your profiles organized, and tune settings for your own Minecraft setup.
Start with compatible Java
The Java version must match your Minecraft release and mod loader. Choose its executable in Options → Java. More recent Minecraft versions often require a newer Java runtime than older releases; check the exact release requirements.
Leave memory for your system
Allocate RAM in Options to suit your game and mods, while leaving enough for your operating system and other apps. Giving Minecraft all available memory can make the whole system less responsive.
Keep a baseline profile
Use a separate vanilla profile to compare behavior when investigating mod-related problems. Change one setting at a time and keep the same game version, resolution, world, and render distance while comparing results.
Measure what matters to you
Launch times and frame rates vary with hardware, Java, game settings, and mods. Wisc does not publish verified performance benchmark results here. Check Minecraft’s in-game frame rate and game output when investigating performance.
Find a launch fix →