Low GPU utilization and how to cope with it

[aligg73]

Running a hybrid attack on a single mask against a single hash would indeed be pretty inefficient.

Thanks for your answer Royce.
The mask file contains about 24 different masks for each hash. And those 24 masks are only the left side of the candidate, the right side are 56 common domain names. So hashcat has 24x56 = 1344 masks to process for each single hash. 

I am not understanding how that is not enough to use full parallelization, but I am probably missing something.