Ready for your server: BadOptimizations has versions for Fabric, NeoForge and Forge. Create your world with one of those loaders and a version from the table below. The newest option is NeoForge on Minecraft 26.3.
What BadOptimizations does
Optimization mod that focuses on things other than rendering
Minecraft uses a cubic color sampler every frame to calculate the current sky color. This function loops 216 times to factor in surrounding biomes, even if all surrounding biomes are identical or have identical sky colors. This mod makes the color sampler only used if you are between biomes with different sky colors, and caches it for each tick. Otherwise, a shorter, simpler and faster sky color calculation is used.
- Author
- thosea
- Categories
- optimization
- Loaders
- Fabric, Forge and NeoForge
- Minecraft versions
- 26.3, 26.2, 26.1.2 and 24 more (oldest: 1.19.1)
- Latest version
- 2.4.1 (NeoForge, September 16, 2026)
- Downloads
- 47,165,222
- License
- MIT
Which Minecraft version and loader it works with
Every world has its own Minecraft version and loader (vanilla, Fabric, Forge or NeoForge).
To play with BadOptimizations, create your world with any of these combos:
| Loader | Newest | Minecraft versions |
|---|---|---|
| Fabric | 26.3 | 26.3, 26.2, 26.1.2 and 24 more (oldest: 1.19.1) |
| NeoForge | 26.3 | 26.3, 26.2, 26.1.2 and 19 more (oldest: 1.20.2) |
| Forge | 1.20.4 | 1.20.4, 1.20.3, 1.20.2 and 5 more (oldest: 1.19.1) |
Does it go on the server or on players' games?
BadOptimizations is a client-only mod: it doesn't run on the server. Each player installs it in their own Minecraft if they want it. Add it in the panel as "Players only" and it ships inside everyone's modpack.
| Where | Per Modrinth |
|---|---|
| Server | not supported |
| Players | required |
| What the panel suggests | Players only |
What other mods it needs
None: its latest version doesn't require any other mods on Modrinth.
How to add BadOptimizations to your server
- Open the panel and create a world with a compatible loader and Minecraft version (Fabric, NeoForge and Forge, per the table above), or open one you already have.
- In the world's "Mods" section, search for BadOptimizations in the Modrinth catalog. You'll only see what works with your world.
- Add it with the "Players only" option, the one the panel suggests for this mod.
- Start or restart the server so it installs.
- Ask your friends to download the .mrpack modpack from the panel again.
Not sure about client vs. server mods? Read the modded server guide. What each size costs is on the pricing page. Prices in Mexican pesos (MXN).
Frequently asked questions
Which loader and Minecraft version does BadOptimizations work with?
BadOptimizations has versions for Fabric: 1.19.1 to 26.3 (27 versions); NeoForge: 1.20.2 to 26.3 (22 versions); Forge: 1.19.1 to 1.20.4 (8 versions). You pick the loader and version when you create your world; the newest option is NeoForge on Minecraft 26.3. The panel's catalog only shows BadOptimizations if it has a version for your world.
Do players have to install BadOptimizations?
BadOptimizations is a client-only mod: it doesn't run on the server. Each player installs it in their own Minecraft if they want it. Add it in the panel as "Players only" and it ships inside everyone's modpack.
What other mods does BadOptimizations need?
Its latest version (NeoForge) doesn't require any other mods on Modrinth: just add BadOptimizations and you're set.
Is it worth adding BadOptimizations to the server if it's client-only?
Yes, as a convenience. It does nothing on the server, but if you add it as "Players only", it ships inside the .mrpack modpack and everyone gets it without searching. It uses no server resources.
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Build your server with BadOptimizations
Create your Minecraft server, add any mods you like and pay only for the hours you play.
Modrinth data updated October 19, 2026.