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Smoothgl

Mod

Honest micro-stutter fixes for 1.21.4 Fabric: frame pacer, raycast occlusion, entity/particle/name-tag/beacon culling, GC watcher, JIT warmup, network input-lag tuner, adaptive auto-tuner, real-time stutter profiler with telemetry HUD. Честные фиксы микро

Type

Mod

Modrinth Downloads

48

Modrinth ID

aAWPNtd6

Last Updated

May 18, 2026

Description

0.1.0 (Initial Release)

Features

  • Frame profiler with stutter detection and breakdown HUD (F7)
  • Adaptive distance culling for entities, block entities, particles, and armor layers
  • Occlusion culling via raycast with TTL cache for entities and particles
  • GPU frame pacer with configurable frames-in-flight depth
  • JIT warmup on startup to reduce early-game micro-stutters
  • Direct-buffer pre-touch on startup (configurable size)
  • GC watcher to monitor pause times
  • Network tuner (TCP_NODELAY, larger buffers, IP_TOS_LOWDELAY)
  • Packet pump for reduced input lag on high-FPS clients
  • Ping monitor with HUD display
  • In-world debug renderer (F9 toggle) for cull boundary and occlusion rays
  • Custom telemetry graphs (frame-time bars + ping line) in HUD
  • Startup phase timer with /smoothgl startup command

Commands

  • /smoothgl - status overview
  • /smoothgl breakdown - frame breakdown
  • /smoothgl startup - startup timing report
  • /smoothgl dump - stutter dump
  • /smoothgl reset - reset profiler
  • /smoothgl set <key> <value> - runtime config

Keybinds

  • F7 - Toggle frame breakdown HUD

Configuration

  • All settings in config/smoothgl.properties
  • Runtime-configurable via commands

Compatibility

Mod Loaders

Fabric

Game Versions

1.21.4 1.21.5 1.21.6 1.21.7 1.21.8 1.21.9 1.21.10 1.21.11

Similar Mods

External Resources