Use texture2d.loadimage to load 100 4K images

Unity Engine
, , ,
1

I need to loading 100 4k image when start application.
I use texture2d.loadImage(filepath) in coroutine to load .
But it slowly and will add memory

   IEnumerator LoadTexture()
    {
        foreach (var fi in directoryInfo.GetFiles())
        {
            if (fi.Extension.Equals(".jpg", System.StringComparison.OrdinalIgnoreCase) ||fi.Extension.Equals(".png", System.StringComparison.OrdinalIgnoreCase))
            {
                string filepath = path + "\\" + fi.Name;
                byte[] bytes = File.ReadAllBytes(filepath);
                Texture2D texture = new Texture2D(2,2);                
                texture.LoadImage(bytes);
                textures.Add(texture);
            }
            yield return null;
        }
        
    }