oclHashcat64.exe Process just kills itself?

[epixoip]

Sounds like a defective gpu.

It's nothing to do with my GPU, it worked fine before the update & it still works on gaming just fine, same FPS.

Gaming does not stress your GPU like compute does. Nothing stresses your GPU more than hash cracking. If it works with -n 1 but doesn't with higher -n, it's entirely likely that there is a problem with your GPU.

However, it would be a lot more helpful if you posted some actual information instead of just "it crashes." Such as an error message you receive when it crashes, the specific commands you are running, etc.

http://hashcat.net/forum/thread-3951.html, maybe we have the same problem?

Doesn't sound anything like your problem.