cv::findContours crash with release dlls

Hi, I'm building a VS application linking opencv 2.4.13 release dlls even for RELEASE and DEBUG configuration. In DEBUG configuration it crashes on cv::findContours. I have already checked that using opencv debug dlls it doesn't happen, but it **let my application slow down due to opencv debugging**. My question is, if I don't need to debug opencv code, there is a way to link anyway release dlls? Or am I bounded to use debug dlls? thank you for the attention, regards Andrea