PeakOptimizer

A performance and stability mod for PEAK that improves frame rates, eliminates micro-stutters, and reduces CPU/GPU overhead.

What is this mod?

I originally made PeakOptimizer because playing in big multiplayer lobbies was turning our games into literal slideshows.

This mod focuses almost entirely on CPU, math, and internal engine cleanup—things like moving voice and wind physics to background threads, stopping the game from stuttering every time someone throws a rock, and fixing laggy distance checks.

• Works great with graphics mods: Since this touches engine logic under the hood instead of modifying textures or reducing visual quality, you can safely use it alongside other traditional performance mods.

Features

• Multithreaded Physics: Offloads heavy background raycasts (voice chat obstruction, wind shelter) to worker threads.
• Zero-GC & Anti-Stutter: Eliminates GC allocation freezes during rockfalls, bot targeting, and continuous physics checks.
• Multiplayer Optimizations: Fixes lag spikes in large multiplayer lobbies with many players.
• Hazard & Particle Fixes: Eliminates Volcano lava lag in The Kiln while keeping hazards working.
• Rendering & Shadows: Optimizes Citadel torch shadows, grass rendering, and fixes shadow acne on mountain terrain.
• World Culling: Pauses distant foliage physics and culls tiny decorative pebbles.
• Experimental Hi-Z Culling: Optional occlusion culling for objects hidden behind mountains (disabled by default).
• Fully Configurable: Every optimization can be customized or disabled in the config file.

Configuration

Tweak or disable specific features in:
BepInEx/config/com.reis.peakoptimizer.cfg

Installation

With r2modman (Recommended)

1. Search for PeakOptimizer in the Online tab.
2. Click Download and launch the game.

Manual

1. Requires BepInEx 5.
2. Drop PeakOptimizer.dll into PEAK/BepInEx/plugins/.