Download Advanced Terrain Grass Free Unity.
ATG is a grass rendering solution that was built to replace the detail rendering system of Unity’s terrain engine in order to get rid of all spikes on the CPU — caused by new grass patches coming into sight when your camera is moving.
Next to this initial purpose, ATG offers significant improvements regarding lighting and wind animation.
Since version 1.2 ATG supports the Universal Rendering Pipeline which also supports touch bending or grass displacement.
Since version 1.07 ATG supports third-party solutions such as Vegetation Studio and lets you use ATG’s advanced lighting and bending features within these.