Question Setting Vertex Color for Mesh vs Sprite Performance

There is significant performance issue with setting Vertex Colors for Sprite.
Setting vertex colors for Sprite, 3x slower than for Mesh..

Code (CSharp):

1.  
2. private void SetVertexColors(Color32[] _vertexColors) {
3.             // set Colors NativeArray from Array
4.             NativeArray<Color32> _vertexColorsNA = new NativeArray<Color32>(_vertexColors, Allocator.Temp);
5.             // set Vertex Colors for Sprite
6.             sprite.SetVertexAttribute(VertexAttribute.Color, _vertexColorsNA);
7.             // dispose NativeArray
8.             _vertexColorsNA.Dispose();
9. }
10.  

"SetVertexAttribute" part is the most costly.

Setting vertex colors for mesh as usual:

Code (CSharp):

1. private void SetVertexColors(Color32[] _vertexColors) {
2.           // set Vertex Colors for Mesh
3.           mesh.colors32 = _vertexColors;
4. }

Is there anything that could be done to improve Sprite performance?

 

Is it just the sprite.SetVertexAttribute(VertexAttribute.Color) which is slow or is it because you are making and disposing an array

 

sprite.SetVertexAttribute(VertexAttribute.Color) alone is making things slow.

And it's really an issue, calling this every frame:
For 1000 Sprites - FPS drops to 30.
For 1000 Meshes - FPS it over 100.

 

Does anyone here or from Unity know more about this? How to set Sprite vertex colors faster? (at least as fast as Meshes)