Stutter Analyzer is a diagnostic and performance helper mod for Minecraft.

It helps you understand what happened when the game freezes, stutters, drops TPS, hangs while loading the world, or suddenly feels laggy. Instead of guessing, the mod watches for suspicious spikes and creates readable reports with useful context.

It can detect things like client render stutters, server tick spikes, MSPT/TPS problems, chunk loading hitches, resource reload stalls, world loading spikes, micro-hitches, severe freezes, and suspicious log signals.

Stutter Analyzer is not a magic FPS booster by itself. Its main job is diagnostics. But it also includes /sa optimize, which can scan your current modpack, suggest compatible performance mods for your Minecraft version and loader, and help install missing optimization mods into your mods folder.

Main features:

Live F3 status line
Chat alerts for freezes and stutters
Saved Markdown and JSON reports
Privacy preview before uploading
Report submission through /sa submit
Recent event viewer with /sa show
Optimization assistant with /sa optimize
Forge and Fabric support

Useful commands:

/sa status - shows current analyzer status
/sa show - shows recent non-minor stutter/freeze events
/sa preview - shows what would be uploaded before sending
/sa submit - uploads a useful diagnostic report
/sa privacy - explains what report data may include
/sa f3 on - enables the live F3 status line
/sa optimize - suggests compatible optimization mods
/sa optimize install - installs the latest compatible optimization plan
/sa help - displays all cmd

Reports are sanitized before upload. The mod tries to remove sensitive data such as PC-usernames, local paths, IP addresses, tokens, cookies, and session-like values.

Stutter Analyzer is made for players, modpack makers, server owners, and developers who want real evidence instead of random guesses like “add more RAM” or “just install performance mods”.