TYLER – Unity terrain advanced for large world.
Native terrain data optimization for Unity system.
It works directly with the Unity terrain system (no patches).
LODs system resolution staggered to achieve panoramic views.
Fantastically increase your FPS, CPU, Tris & Batches for Big terrain.
It includes:

Chunk system with load and unload for native Unity terrain.
LOD system in three levels of resolution at the same time.
Load and unload tyles system for native Unity Neighbor Terrain.
Multi-Tiled system, split for world streaming Unity terrain.
Auto-Stitch system to eliminate bad joints from the terrain.
Vegetation System to put trees and grass on all terrains at the same time.
SplatMap system, to import and export color maps of your terrains.
TerrainData system, to import and export the height and raw map at the same time.

Transform the native Unity system into an advanced option so you can get the most out of it. It works perfectly with both simple land and neighboring land. Divide the terrain into clean units so you can modify it however you want, apply 2 to 5 automatically graded LODs with different resolutions to all terrain tiles, without being limited by plugin options. This way, you can build panoramic terrains without worrying about losing performance in your game.

Example: You can set the main terrain (Tile) to high resolution so that the environment looks perfect, and the other terrains you can lower them to the maximum resolution to reduce their weight to 80%. In this way you will get a panoramic view without losing CPU & FPS. In play mode the resolution changes on the terrains are very smooth and practically undetectable.

The scene will have: 1 High-resolution Main Terrain, and will be surrounded by 8 low-resolution tiles, and with the possibility of adding two more rows of tiles at very very low resolution. You can adjust the resolutions of the terrains for each level of tiles, until you get the most optimal for your game.
Integration with:

CTS.
MicroSplat.
Vegetation Studio Pro.