I don't know if it depends on the car, the track or the time of the day, but under certain circunstances the excessive dirt on the windshild makes it difficult to see well and drive confidently. Is there any way to make this dirt more subtle, maybe edinting some files? Using the wipers makes no difference. I think it would be a great idea if Custom Shaders Patch could give the wipers the function of removing the dirt for those like me who never drive with rain. It would be very easy to implement.