Wow, that sounds like the worst GoT viewing experience possible lol. I think I can see what you mean; there are definitely a lot of scenes technically unnecessary to move the plot along, and combined with the number of plotlines it makes the story move glacially (not helped by plotline conclusions not necessarily making the impacts you would expect on the story).

I think that's actually a big part of what makes it stand out, though. It gives the world- and character-building a uniquely organic feel that wouldn't be there if the story was the focus, with lots of incidental moments that don't necessarily need any weight. The enjoyment comes more from learning and immersion than anything.

Admittedly I'm all about characters and atmosphere, as long as those are solid I can enjoy something regardless of whatever else it does or doesn't have going. Watching with full spoilers I got basically nothing from any progression in the show; though in a way I think it actually made me appreciate the moment-to-moment of it more when I had zero expectations for the destinations and could just enjoy the progression.

Now that I think about it seeing the last few seasons first might be the right way to watch it lol, if someone's still interested after knowing nothing concludes satisfactorily then it's for them.