You only control a single character...
Just like in Arcanum and Morrowind, two of your most favorite games? I get this criticism from the "only TB & FPC" people. NWN is not that, if that is what you want. I generally prefer that sort of thing myself, though obviously I do not think every single RPG has to be TB/FPC. If one goes into NWN expecting a Gold Box or Infiinity Engine game, or something along those lines, it is obvioulsy going to be a big disappointment. However, if one compares NWN specifically to other
single character RPGs, then I have always found its core systems and gameplay to be among the best for single character RPGs specifically, much better than those in, for example, Fallout, Arcanum (both with even worse companion AI & control systems) and Elder Scrolls games.
In contrast to NWN, Arcanum's combat is at least fast and quickly gotten over with. Even a trash mob of a dozen enemies takes less than half a minute to dispose of, while in NWN you would be spending 3 to 5 minutes on the same amount. If the combat isn't great, at least make it quick - of all the games with mediocre combat, NWN is the slowest by far. And funnily enough, NWN's RTwP is far slower than comparable turn based games, too - even the Gold Box games and ToEE feel faster than NWN. This slowness combined with the OC's trash mob heavy encounter design just makes everything feel like a waste of time, and even in a module with good design - like Swordflight - the slowness really annoys me. I have to play it with Cheat Engine's speedhack set to x3 to make the game enjoyable.
Morrowind and other action RPGs are a completely different ballpark, and not really comparable. You could compare Morrowind to Gothic or maybe Deus Ex or even Dark Messiah of Might and Magic. RPGs (or action games with RPG elements) where you control your character directly in first or third person view. I enjoy those games a lot, but they offer a different experience from isometric CRPGs. If you translated Morrowind into a top-down game with point-and-click controls, it wouldn't work out at all and lose most of its charm.
Also, Morrowind's combat is generally pretty quick too if you know what you're doing, especially if you keep your stamina up.
NWN lacks the tactical options of a party-based RPG, but it also lacks the quickness of combat in most single-character RPGs. Arcanum's combat is extremely fast, Morrowind's is pretty fast too most of the time, Diablo 2 is fast, even Fallout's turn based combat is pretty quick as long as there aren't any hobos on the map (fuck those guys). NWN doesn't have more tactical depth than these games, but it's much much slower.
I also disagree that NWN's core systems are among the best for a single character RPG. In my opinion, it's got the worst possible system for a single character RPG: D&D 3.5 which is intended for parties of 2-8 characters (with 3-6 being the "golden zone"). There exist some single character modules that can be run by a DM and one player, but those are usually designed for specific classes because D&D's class based system means you want to have a good mix of classes in your party in order to deal with all the potential obstacles in front of you. D&D isn't designed for single character adventures. It's designed for group adventures, where all the classes complement each other so you can have fun playing with your mates (or, in a single player PC game, have fun controlling an entire party yourself).
Arcanum and Morrowind, on the other hand, were designed as flexible classless systems for single character adventures. I find both systems to offer a lot more variety and experimentation for character building than D&D does, which is naturally restricted by its class-based nature. A system designed for single character adventures is always going to be superior for those types of games than a system designed for party-based adventures.
And then the lockpicking, trap disarming, and resting. All that shit took a lot of time. In Baldur's Gate, these actions were all instant...
Baldur's Gate took the time to play a campfire cinematic when the party rested. This sort of thing is not as unprecedented as you imply. Even if one grants that some animations take longer than they really need to (it makes sense if one is picking a lock or disarming a trap in the middle of combat, but admittedly that is rare), that is an extremely nit-picky thing to make such a big deal about. Aside from a few specific animations, I do not know what is slower in NWN than in most other games. Fighting trash mobs or Hit point sponges in NWN can certainly be tedious, but that is because trash mobs or HP sponges are going to be tedious in any game - that is an issue of encounter design, not game systems.
Baldur's Gate's campfire cinematic can be skipped by a click of your mouse. NWN's resting countdown cannot be skipped by any means.
NWN really is the slowest RPG I have ever encountered in my life. Walking speed is slow, combat is slow (due to the 6 second rounds between actions, coupled with being a single character game so you only perform one action every 6 seconds), non-combat activities like thievery skills are slow. Maybe it annoys me so much because I don't enjoy the core combat gameplay in the first place, and the slowness just makes it worse. But I really can't think of any other RPG that's
this slow in everything. The only way it's playable for me is by running Cheat Engine's speedhack at triple speed. Granted, there are other games where I use the speedhack (Underrail due to the slow walking speed), but it's only NWN where
every single element of the game feels too slow, rather than just one element (be it combat, walking speed, or non-combat skills).
Overall, my experience of NWN is one of annoyance and having to put up with stuff that I don't like, rather than one of enjoyment. I played through most of Swordflight until I hit a spot where I couldn't progress past some hard undead encounter that always killed me and my character wasn't equipped/skilled to defeat that particular enemy, and of course my companions who could have dealt with it weren't reliable either... I had to reload and pray they'd do what they had to, just to die and reload again. I gave up when I realized I was at the mercy of uncontrollable companion AI and the game devolved into a struggle with its shitty systems, rather than a struggle against the encounter design itself.
As good as the encounter design is, it wasn't much fun to play due to the non-controllable companions. I played a fighter with one or two rogue levels for backstabs. Maybe it would be more fun with a caster? But then I don't get to equip all those cool unique weapons. But at least I would have control over which spells to cast when, rather than hoping my retarded companions don't waste all their spells in the attrition trash mobs before the big boss encounter, which they consistently did only to end up useless in the situations I really needed them. My strongest memory of Swordflight was in chapter... 2 or 3? Where you assault a castle, and you have that rogue chick with a crossbow as your companion, as well as some cleric guy who joins you during that chapter. The final fight in that castle consisted of the crossbow chick getting herself killed by AoOs over and over again because she kept firing her crossbow in melee range. I raged at my screen and wanted her to GTFO but the limited companion controls of NWN didn't allow me to make her to what I wanted her to. Meanwhile the cleric kept wasting spells that could have been useful against the boss enemy against the weaker support enemies. It was mostly a struggle against the AI of my companions, than it was a struggle against the enemy.
In any other game, this encounter would have been fun. In NWN, it was annoying, frustrating, and I was glad when it was finally over. Terrible game.