I can confirm this problem:
cudaExample0.sh
cudaHashcat 1.31 @ 750Ti
Started: Thu Feb 26 17:39:51 2015
Stopped: Thu Feb 26 17:41:29 2015
>>> 98s
cudaHashcat 1.32b16 @ 750Ti
Started: Thu Feb 26 17:26:28 2015
Stopped: Thu Feb 26 17:29:41 2015
>>> 193s
cudaHashcat 1.34b7 @ 750Ti
Started: Thu Feb 26 17:30:42 2015
Stopped: Thu Feb 26 17:33:27 2015
>>> 165s
cudaExample0.sh
cudaHashcat 1.31 @ 750Ti
Started: Thu Feb 26 17:39:51 2015
Stopped: Thu Feb 26 17:41:29 2015
>>> 98s
cudaHashcat 1.32b16 @ 750Ti
Started: Thu Feb 26 17:26:28 2015
Stopped: Thu Feb 26 17:29:41 2015
>>> 193s
cudaHashcat 1.34b7 @ 750Ti
Started: Thu Feb 26 17:30:42 2015
Stopped: Thu Feb 26 17:33:27 2015
>>> 165s