I found Ultima VII unplayable. By the time I got to it, my brain was totally wired for the other style of "isometric" (I really don't have time/interest in debating whether any of this is actually isometric) projection, so everything looked absurdly tilted. Added to that is the worst inventory in any game I've ever played, followers who can't feed themselves, requiring me to find food for them in that worst inventory of all time, and combat being terrible. I gather than with proper DOSBox settings, the timing on things could be improved, but when I played it, I either didn't get them right or they didn't work, and the result was that some things still happened absurdly fast. Combat is one example, but there were also times when followers started going berserk for food and then abandoned the party before I could find food for them. Finally, the font is horrible, probably the worst font in any game I've played, and the combination of RenFaire Olde Englishe and a gothic font made simply reading the text intolerable, however good the plot may have been.
It's a shame because I could've grown up playing Ultima IV, V (my best friend in fourth grade was obsessed with it, and we talked about it all the time and I played it a few times at his house), VI, and VII, and I'm sure played contemporaneously I would've adored them. For whatever reason, though, I didn't really play computer games much at that age, and missed the boat.