My group is currently on Palace of the Fallen Star with a mix of veteran and newer players. Party ranges from 4-6 player depending on RL issue with Cohorts to bring the party up to 5 when needed. I had them start with a 25 point buy build.So far the only deaths were from either bad luck or REALLY bad luck, though there has been a few close calls. I have also ghosted the Obituaries to see where most deaths and TPK happen and try to plan the party’s encounter with those encounters to give the players a fair edge and my few house rules are aimed at helping the player where I feel the rules are the weakest for the player.
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Large party, with higher point buy, and many favorable house rules do not make for a normal experience. I am glad your party is not having any issues but you have made many exceptions. So with that in mind you are slightly off topic of what the OP wanted to express that this is indeed a harder module.
Like I said earlier it's certainly a harder one but I think the tech is supposed to make up for some of it at least. Just having the grenades have saved lives many times already.