Activating the Pack in Video Settings
Pain Shaders runs through your shader loader, such as Iris or OptiFine, rather than altering world saves. With the pack ready in your game, you can switch on its cursed visual look before loading a world or directly during gameplay.
1. Open the pause menu or start from the title screen and click Options.
2. Go to Video Settings, then open the Shaders or Shader Packs menu.
3. Select Pain Shaders from the list and apply your changes to activate the distorted screen rendering.
Stepping Back From Heavy Screen Chaos
Because the pack casts chaotic visual effects across your screen to disorient you, long sessions or detailed chest sorting can quickly become overwhelming. You do not need to exit your world to restore normal rendering.
Reopen the Shaders menu and select Off—or click your shader loader's disable toggle—to immediately return block textures and lighting to standard vanilla visuals. You can also check Options > Controls > Key Binds for your shader loader's shader toggle shortcut and bind it to an accessible key, letting you turn the distortion off instantly whenever you need a break.