Vitals HUD

Vitals

Your FPS counter tells you that you stuttered. Vitals tells you why.

Vitals is a clean performance HUD with a built-in stutter detective. Every hitch gets logged with its most likely cause, and Vitals looks at your actual settings (shaders, Distant Horizons, render distance, RAM) to tell you what to change. Many fixes are one click.

📈 The HUD

Press F8 to show or hide it.

• FPS, colored green, yellow or red, plus your 1% low: the FPS of your worst moments, which is what you actually feel
• A 5-second frame-time graph. Each bar shows the worst frame in its slice, so a spike can never hide.
• Ping and server TPS. TPS is estimated from how fast the server's clock advances, so you can tell your lag from the server's.
• A memory bar
• A short alert each time you stutter, naming the cause

🔍 The stutter detective

Any frame that takes more than 3× your normal frame time (and at least 50 ms) is classified as one of:

• Memory cleanup: matched against Java's own garbage-collection events, with the real pause length
• Chunks loading: lots of chunks arriving at once
• Lots of entities: crowded hubs, farms, mob grinders
• Loading world, resources reloading, opening a menu: normal one-offs
• Rendering load: shaders and Distant Horizons
• Server lag: the server stopped sending updates, so it's not your PC

🩺 The Vitals screen

Press F9 to open it.

• A 10-second graph with 60 and 30 FPS guide lines
• FPS, 1% low, average and worst frame time, ping, TPS, chunks per second, entities, RAM and GC pauses
• Your recent stutters, each with its cause
• Tips for your setup, worst first. For example: "Distant Horizons is at 256 chunks with shaders on, try 128", "VSync is on", or "Minecraft only has 4 GB of RAM". Safe vanilla settings have a one-click fix button.
• HUD options: on/off, corner, size, graph

Details

• Client-side only. Works in singleplayer and on any server.
• Requires Fabric Loader and Fabric API
• Read-only: Vitals only watches. It sends nothing to servers and nothing leaves your PC.
• Very lightweight: numbers refresh 4× a second, and the expensive bits only run when a stutter happens.

Made by RdotA.