I'm running an AnyDVD HD folder backup of Fellowship of the ring UHD disc 2. As the main movie file (00073.m2ts) is being read the read speed steadily increases slowly up to about 28mb/s until at around 35% the speed slowly starts to decrease at about the same rate as it increased. At about 2/3 of the way through that file the speed is at 19.56mb/s and continuing to fall. Around 79% and the speed is now starting to steadily increase again after bottoming out at around 13mb/s. I'm running a brand new 64bit Win10 AMD Ryzen based PC and an ASUS UHD friendly optical drive. Very strange behaviour. Anyone else experience this?