Well it seems to have gone dark here, but I have some more information regarding this issue. Hardware acceleration is not actually being disabled. I am monitored my video card during an H.265 rip and is being stressed by the software. The problem is that for some reason the CPU is being engaged an is overriding the videocard. Performing the same process with DVDFab 10 has the proper action. My normal CPU usage during a Hardware rip is about 20% and an FPS of 80-120fps. With DVDFab 11 my CPU usage climbs to 70-90% and the FPS drops to 24fps. I can't seem to get any version of DVDFab 11 to work now, only ver 10.x works.
SecondB
try clicking common settings - general settings - then in the general settings area click on the factory default settings button
in the lower left corner of the general settings area, restart dvdfab and retry encoding again.