Suffer display sensitivity and sharpness

These films are quite cheap and offer a really good anti-reflective front, but the sharpness suffers significantly and the scattering of the film itself bothers me. When you scroll, for example web pages you can see very clearly how the film scatters the colors and it looks a bit as if many small grains would be on display. In addition, the sensitivity of the display suffers. By clicking movements it is still to some extent, at wiping movements it is much more difficult. Many movements I must now execute several times until you achieve the desired effect; Before, it was never a problem. Will the film therefore exchanged for another without anti-reflective protection.
Conclusion: Only suitable if you work outside all day under the scorching sun and has otherwise struggling with disturbing sun reflections.