OVER A LONG PERIOD OF TIME I HAVE HAD PROBLEMS WITH THE FINAL OUTCOME ON DOWLOADED DVDS NO MATER WHAT FORMAT I USE TO DOWNLOAD THE QUALITY OF THE DOWNLOAD IS EXCELLENT WHEN I BURN TO DISC THE FINAL PRODUCT COMES OUT WITH "WAVEY" MOVEMENT WHENEVER DIALOGUE OR MUSIC OF THE SOUDTRACK PLAYS. HOW CAN I OVERCOME THIS PROBLEM?