Text Mesh Blur Text

I am using text mesh in unity 5.2.1 and i noticed that when the font size of the text is low like 5, the text would seem very blurry, however, if i increase it to 20, the text is not blurry, how do i fix this problem
as i really need the text to be at a font size of 5.

It is only possible to achieve more detail by increasing the font size, but if you want the text to stay the same size you can change the character size to something lower.
For Example:
You have a font size of 5 and character size of 1, then you can change font size to 20 and character size to 0.25. Because you multiplied the original font size by 4 you have to divide the original character size by the same value.