ObeliskValheimOptimizer
Lightweight Valheim optimizations with safer light lifecycle handling.
About this mod Author’s original text
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.
Install & use Install: BepInEx plugin
- The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
- Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
- Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
- Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.
Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file. In multiplayer, the host and every client need the same mods installed.
Install these first, or the mod will not work: