I have 9.2.2.4 version of DVDFab. I noticed one issue, I have MKV file of 27GB and i want to convert it to fit it on single layer blu-ray. The problrm is that when I want to shrink it to 24000 MB, I am getting 15 GB file size, I can put 30000 MB but converted MKV file size is always no more than 15GB (It can be smaller). That is all happening with CUDA encoder of my 2 x GTX980 cards, when I select software encoder (my i7 5930K) I am getting right MKV file sizes but it is 3 times slower than with my GPUs. What is the problem?