I'd love to hear more about how Neverwinter Night's six second rounds for combat makes it a terrible game.
It makes the game unnecessarily slow. However, when you pair it with the overall jankyness of the character controls, the shitty wheel menu, the fact that you really only directly control one character and if you have a henchmen they are a detriment to themselves even if you give them commands they do poorly in following them thanks to their AI, and with having to wait to cast and do other things OUTSIDE of combat based on that timer makes NWN absolute dogshit to play.
I kinda liked A Dance With Rogues because it focuses on intrigue rather than combat (which is NWN's weakest element due to the issues you described).
But as you play a rogue, there's a couple of quests where you have to use thief skills like opening locks and disarming traps.
Remember how in Baldur's Gate those actions were pretty much instant?
In NWN you have to watch a 6 second timer go down every single time you use these skills.
Complete fucking trash, NWN has tedium hardcoded into its most basic gameplay systems so even good modules that should be fun to play become an absolute chore.
There are plenty of NWN user modules I appreciate for their design, but actually playing them is terrible. They would be excellent 10/10 games if they ran in any other engine than the irredeemable piece of shit that is NWN1.
But as is, their actual fun factor never manages to surpass a meager 4/10. That's how horrendously NWN plays. It manages to drag down absolute masterpiece 10/10 content like the Swordflight series to the gutter. Its very core is designed to be anti-fun.