OPTServer 1.1.0-beta.8 — Less Wasted Work. More Room to Play.

Minecraft 1.20.1 · Forge 47.x · Java 17

"Note: All benchmarks above were recorded on my aging potato HDD. On a modern SSD/NVMe, the performance gains and streaming speeds will be even more dramatic."

SERVER-ONLY READY (100% VANILLA CLIENT COMPATIBLE) — INSTALL THE SAME JAR ON THE CLIENT TO UNLOCK ZSTD & INTERPOLATION FOR MAXIMUM PERFORMANCE!

2. Component Microbenchmarks & Traffic Reduction

Native Server-Side Compression (libdeflate 1.25): Cuts chunk-packet encoding time by ~80% compared to standard direct-buffer Deflater (~455 µs -> ~89 µs/packet).

Controlled 2-Way Codec Benchmark (Zstd Level 3): Reduces combined encode + decode time by ~62% compared to libdeflate + vanilla decoding (~146.7 µs -> ~55.3 µs), with only ~1.5% larger frames.

Distance-Aware Entity Snapshots (~60.9% Reduction): Replaced 23,692 relative movement-packet attempts with 9,263 compact absolute snapshots during an 80.6s session (~294/s -> ~115/s), paired with up to 12-tick client interpolation.

High-Speed Flight Corridor (flightchunks — ON by default): Activates automatically at  22 blocks/s (deactivates below 13 blocks/s, maintaining a 4-chunk safety radius and a ~7-chunk wide forward corridor. Suppressed 19,927 redundant chunk-forget requests during a ~50s flight session (~397 unnecessary requests avoided/s).

3. Core Technical Features

Experimental Zombie Flock Navigation: Groups up to 128 eligible adult zombies pursuing the same target; only the 3 nearest leaders run full vanilla A^* pathfinding while followers reuse validated path segments or tail-follow, with automatic vanilla A^* fallback.

Network & Memory Housekeeping: Direct-buffer compression paths eliminate packet-sized Java heap copies; selected network flushes are batched with a 2 ms delay / 128-request cap; automatic local XP-orb merging preserves Mending and pickup behavior.

4. Platform Support (Windows vs. Linux)

Windows (64-bit / x86_64): Full native hardware-accelerated compression is bundled out-of-the-box (libdeflate 1.25 for Server-Only, and auto-negotiated Zstd level 3 for Server + Client).

Linux & Other Platforms: Fully compatible with all core optimizations (Automatic Flight Corridors, Zombie Flock AI, Local XP Merging, 2ms/128-req Flush Batching, and Server + Client Distance-Aware Motion Snapshots/Interpolation). For packet compression, non-Windows platforms automatically fall back to Minecraft's built-in default compression (zlib/Deflater) paired with direct-buffer memory paths to avoid heap allocations.