As for TB being longer, I played Deadfire in both RTwP and TB and with all the pausing I had to do in RTwP even with the AI (I admit I didn't make anything complex), TB wasn't any longer on the same difficulty outside a few of the larger boat fights (too many bodies). Some Boss fights were even shorter than in RTwP. I also found using spellcaster much more entertaining in TB and used consumables more often as speed wasn't as much of factor anymore.
Casting area of effect spells is quite unsatisfactory in RTwP, having enemies move around or accidentaly hitting one of your own. Turn-based does make it alot easier though, like if you played Pathfinder with the TB mod you'll know how broken Grease is. Half the enemies just taking a nap every fight.
