Epic Game Optimizer

Epic Game Optimizer is a tool made to boost the game performance by scanning the scene with a collider and disabling Renderers, Rigidbodies, Lights, Particle Systems, Skinned Meshes, Animators, and colliders.

The previously mentioned components are deactivated when the player moves away from them and reactivated when the player moves toward them at a predetermined distance.

It gives you the possibility to create huge open worlds.

You can get it here: https://assetstore.unity.com/packages/tools/utilities/epic-game-optimizer-238489