d1b1

Hi Can somebody tell me why when setting it up to x2.4 it writes several times faster? I have lost several DVD DL because of it. That is, it does burn them but they are not readable in few DVD players. What can cause this? Is setting for individual DVD DL(Verbatim I'm using) i have manually set it up to burn X2.4 but it still takes X4 nd higher. I have many time removed Imgburn and reinstalled him always with the same results. Please help!!!!! d1b1