Obelisk Valheim Optimizer 0.1.2

A lightweight, configurable performance mod for Valheim 0.221.12. It reduces avoidable work from lights, smoke, fireplace particles, ground-loot auto-stacking and the SkyAlpha roof mask, without changing saves, inventories or network data.

Features

• Limits persistent light flicker, light distance and shadowed point lights.
• Reduces fireplace smoke and particle cost while preserving smoke blockage and ventilation.
• Cleans up a verified allowlist of orphaned local particle effects.
• Removes the allocation from vanilla owner-only ground-loot auto-stacking.
• Caches the 1024 x 1024 SkyAlpha mask until the player moves, teleports, or relevant geometry changes. It uses Valheim's existing one-second callback and adds no per-frame player tracking.

Optional weather controls

Both weather options are disabled by default.

• DisableRainWear: disables rain-only damage to building pieces. Roof detection and wet visuals remain active.
• DisableRoofWetChecks: skips ordinary rain roof casts and piece wet visuals. Ashlands roof protection, underwater wetness, structural support, lava and normal damage remain unchanged. This option also prevents ordinary rain wear because pieces are treated as covered.

Weather options affect the ZDO owner. Restart the world after changing them and use identical values on the dedicated server and every client that can own building pieces. With both weather options disabled, the optimization features are client-side.

Installation

Copy Obelisk.ValheimOptimizer.dll to BepInEx/plugins. Configuration is created at BepInEx/config/obelisk.valheimoptimizer.cfg.