I'm in the process of running this AP for a relatively inexperienced group of players and have noticed that they are tearing through most encounters with ease. Most of the enemies have AC's low enough that the gnome bard is hitting consistently, and the actual damage dealers take them out in only a couple hits. And it seems like the enemies need to roll crazy high to even hope to hit some of the PCs. The PCs are currently assaulting Abadar's Pillar in Book 4, and it's difficult to make the place (or even Pythareus) feel like a threat when his troops drop like flies.
This isn't the only time I've noticed this problem in this AP, most of the enemies in Book 3, the monks in Book 4, and even Milon Jeroth were also pushovers. I know this is supposed to be the intrigue AP, so maybe they decided to make it a little less lethal than normal, but right now it's like they're fighting mall cops.
Has anyone else had similar issues with the AP, if so how did you handle it?
In general, the APs are calibrated for a party of four PCs who are built with 15 points and do not come from any over-powered species/race (aasimar, etc.). Does your party of PCs follow those guidelines?
It's also assumed that the PCs are played by players without total system mastery. Of course, that last point doesn't cover situations where non-expert players get expert advice from other sources (internet, etc.) on their builds and item acquisition.
As for the WftC AP itself, it's been a while since I read it and I'm AFB right now, so I don't have more AP-specific advice, unfortunately.
I found that the group sometimes did really well and sometimes got hurt.
With any published adventures you have to make lots of tweaks.