I'm a new user of UHD Copy.   I saved a Full Disc ISO of the 4k UHD disc to HD, took about 1.5 hours.  I can play it with ease on the computer.   I then proceeded to burn the ISO file (92 GB) to a BD50 disc, reencoding indicated it will take 40+ hours to perform the operation.  I have GPU enabled in the settings, but only see a CPU load at 100%, no GPU is used.  My system uses an I7, 4.0 GHz, 32 GB ram, Nvidia GTX750 graphics card, SSD HD's.  Does this 40+ hours to reencode sound normal?  If not what could I be doing wrong, or what should I be doing to speed things up?