Trail renderer draws trails so slow when using transparent texture

Hello, The scene i have is pretty simple. Just a gameobject in the scene with a simple script attached to it that moves it in the way of sin graph. So i draw a line of sin graph in conlusion. I use particle shader alpha blended because i have a transparent texture. What i see is there is a delay while using transparent material. In the scene view i see that the mesh generation of the trail renderer is immediate but the texture follows it so slowly, i cannot figure it out why. Surprisingly, when using diffuse material the texture generation is immediate as the mesh generation. The second problem i face is that the trail has some sort of strange opacity that i didn't define. I set all the alpha values in both material and trail renderer color array to 255 which does not solve anything so far. Below, there are few screenshots from the scene that will make you understand the situation. Thanks in advance!