Nvidia GTX GPU not working

[duhblow7]

517.4 kH/s is right on point for that cards benchmarks.  Here is the benchmark I found:

https://hashcat.net/forum/thread-5729-po...l#pid30819

WPA has a 4 way handshake which adds much more overhead during brute force cracking.  This is why it is much slower than say, MD5.