Sure.
Although ill preface by saying the Pro and above AI is still EXTREMELY hard to finish with straight GnP, in a good way.
First up, timing.
You need to time your shots in a way that isn't patterned.
Left-right-left thrown as quickly as you input them is going to get you arm trapped quick.
Left- pause, transition fake or denial of opponents transition, then the right.
Mix up head and body shots constantly, this will make the AI block the wrong area, throw a heap of postured down body strikes then posture up and immediately go for the head.
The best times to strike, hands down, are when you've got the AI tired from denials, or DIRECTLY after you deny something.while postured up.
Another thing with GnP is its more about cumulative damage, don't expect to KO them with it in the 1st, work at it and come the 3rd they're barely going to be able to take 2 strikes.
After a KD, when you jump into guard, time your strikes directly after the AI attempts to hit the postured down transition, if they don't have arm traps you can just throw like a mother high/low.
And finally, if you want an easy merking, just stack guard the AI. The AI has awful stacked defence.