🚀 Hardly Optimised

The definitive Fabric performance pack for 1.16.5 → 1.21.x

Tested on i5-4570/4GB DDR3/Tiny11 - No theoretical benchmarks!

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⚠️ Critical Warning: Minecraft 1.21.5-1.21.7 Unsupported

All versions between 1.21.5 and 1.21.7 suffer from severe Intel GPU freezes (Mojang-confirmed bug).

• ❌ No longer supported in this modpack
• ❌ No stability fixes will be backported
• ✅ Upgrade to 1.21.8 immediately for crash fixes

This is not optional if you use:

• Intel UHD/Iris graphics
• Any integrated GPU
• Low-end systems

Continuing to use 1.21.5-1.21.7 may corrupt worlds during freezes.

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🔬 Proven Performance

Hardware Validation

• CPU: Intel Core i5-4570 (4C/4T @ 3.2GHz)
• RAM: 4GB DDR3-1600 (single-channel)
• OS: Tiny11 23H2 (600MB idle RAM usage)
• Storage: DRAM-less SATA SSD

Real-World FPS

Version	FPS	Settings	RAM Usage
1.16.5	47-164	8 chunks, Fast	1.4GB
1.20.4	55-106	6 chunks, Fancy	2.9GB
1.21.8	76-114	6 chunks	3.2GB

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🎯 Version Guide

✅ 1.16.5 - The Low-End Champion

• Best for: 4GB RAM systems
• Key Mods:
  • Sodium-Fabric (1.16.5 fork)
  • Phosphor (lighting optimizations)
  • FastChest (container lag fix)

⚖️ 1.20.1 - The Modding king

• Requires: 8GB+ RAM for modded play
• Shaders: Iris works but cuts FPS by 40% on HD 4600

⚖️ 1.20.4 - The Balanced Choice

• Requires: 8GB+ RAM for modded play
• Shaders: Iris works but cuts FPS by 40% on HD 4600(tricked shaders reccomended)

🚧 1.21.8 - The Future (With Caveats)

• Critical Fix: Intel GPU crash patches
• Work In Progress: Some mods still updating

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⚠️ 4GB DDR3 Limitations

• Max Settings:
  • 6 chunk render distance
  • 0 mipmap levels
  • No shaders/texture packs
• Must:
  • Close all background apps
  • Use Tiny11/AtlasOS

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📥 Download Recommendations

Hardware	Best Version	Notes
4GB DDR3	1.16.5	Change settings if lag is a problem
8GB DDR3	1.20.4	Stable for modpacks
Intel GPU	1.21.8	Required for crash fixes

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