dictionary attack problem

[ralf.brown]

in oclhashcat 1.37 with these options  -a 0 -m 1000 <my hashes> <my dic> take log time to crack .and not use gpu and gpu usage are 0.because of small dic.when i give oclhashcat a big dic it start cracking on gpu but again are so slow.take log time to progress.and one by one check the hashes.all test is on 4 r9 390x.

but when i test my hashes with that dic on hashcat-cli on cpu it take 2 minutes to crack all of them.and the speed are amazing.

i use -r rules/.... all of them not work on gpu and again speed was horrible.

what is the problem ??