LoadShift

Automatic FPS Target Balancing

Set an FPS target and LoadShift adjusts your graphics settings to hit it.
It detects CPU and GPU bottlenecks in real time and automatically tunes the settings that matter most.

LoadShift is active right after install with a target of 120 FPS and starts
adjusting your video settings when you join a world. Change the target with
/loadshift target <fps> or turn it off with /loadshift off.

Your settings stay yours: every change is logged (/loadshift status), and
/loadshift revert puts everything back and switches LoadShift off.

What you get

• Best quality at your target FPS. When your game runs faster than the target,
  LoadShift raises quality. When it drops below, it lowers the setting that costs
  the most on whatever is limiting you (GPU or CPU). It only raises a setting
  when it predicts the FPS will hold, so it doesn't keep flipping back and forth.
• Shader tuning without freezes (Iris). LoadShift switches between your shader
  pack's quality profiles (BSL, Complementary and similar). The new shaders are
  prepared and compiled in the background while you play, so the switch itself
  takes about 0.4 s instead of several seconds. It also prepares the Nether and
  End shaders, so server world switches don't hang in the loading screen. This is done using Seamless shader reload.
• Never at a dangerous moment. Anything that could interrupt the game only
  happens when you are safe: not in combat, not falling, not flying with an
  elytra, not in lava, and only with 8 or more hearts. Longer interruptions (like
  turning shaders on) wait for the pause menu.
• Respects your changes. If you lower a setting yourself, LoadShift won't
  raise it above your value. If you raise one, it won't go below it. This lasts
  until you restart the game, turn LoadShift off and on, or set a new target.
• Smart render distance. Never below 4 chunks. If it was lowered while you
  were flying, riding or using an elytra, it comes back as soon as you slow down.
• Remembers your worlds and servers. A stable setup is saved per world or
  server and used as the starting point next time.
• Plays well with others. Works with Sodium, Iris, Voxy and Distant Horizons.
  With Voxy, your LODs stay loaded during shader changes. Sodium's own settings
  are never touched. Gets the most out of shaders.
• Analyzer HUD (F8). Shows FPS, GPU/CPU load and what is limiting your game,
  with a tip on what to change.

Settings LoadShift can change

Render distance, entity distance, particles, clouds, cloud range, weather radius,
Improved Transparency, cutout leaves, entity shadows, ambient occlusion, biome
blend, FPS cap, shaders on/off and the shader pack's quality profile. Each one can
be disabled in config/loadshift.json.

Commands

/loadshift on | off | status | target <fps> | revert | diag

Also available as a settings screen through Mod Menu.

Requirements

• Minecraft 26.3, Fabric Loader ≥ 0.19.5, Fabric API, Java 25
• Seamless Shader Reload (included, nothing to install)
• Optional: Iris (shader tuning), Mod Menu (settings screen)

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