I am going to go out on a limb and guess not a few people who like Pathfinder APs on this board prefer the 5E ruleset for play at the table.
If you fit into that category, I am curious which Pathfinder APs you have run (or played in) using 5E. Also, how did it go? Did you convert on the fly or do a bunch of prep work? Where did it break down or get difficult, if at all? Would you do it again? And if you have run multiples, which ones worked best?
Thanks!
I do this since I started 5e.
I have run Giantslayer and currently half way through book 3 of Rise of the RuneLords.
The trick is re-skinning everything. Meaning keep all the images of the creatures the same and find creatures that are close to what you need it to be.
Today I ran the an encounter with the Black Magga in the town of Turtleback Ferry, the creature looks like the lockness monster on the body of a octopus, it is huge in size.
I used Kobold fight club, found the Froghemoth from volo's guide, aded more hit points to make it a CR 11 instead of 10 and here is how you sell it.
Describe everything the creature does as the image it is supposed to be.
I kept the Froghemoth the same but bumped HP's by 20 and gave the bite a 10ft reach as the black magga has a long neck.
The tongue attack I described it as a fifth tentacle as it has 8 anyway.
So they fought a Frogthemoth but every description was for the black magga, very simple.
If you run an AP with many Orcs and Ogres, which I changed half the Ogres in book 3 to Orcs in Rise of the Runelords as one of my players is a half orc and had to work in his background he wrote up buy this PDF's
Nerzugal's Extended Bestiary
Ultimate Bestiary: Revenge of the Horde
Black Magga
Frogthemoth
As for Magic you have to follow the Xanathar's guide to placing magic items, I like to give more one shot items and have now stolen the trinket idea from Pathfinder 2e so that fighty classes have more one shot items.
I use many potions, scrolls and items that burn out. I also have my players make a list of magic items they want from each category (common,uncommon,rare,etc...) and that is what I give them as the game goes on.
All that matters is description.