What immediately bugs you when watching an episode? Mine is when they transport someone sitting down and they reintegrate in a standing position (or vice versa). Sure, the tech is near magical but my suspension of disbelief pretty much snaps when they do this.
I always found that frustrating too. I feel like it gets even worse in Voyager. There are things in DS9 that I think should have gotten some sort of follow-up mention, (“Hard Time” being a major one) but they normally did a good job keeping interesting story arcs without it becoming too serialized. Now I feel we’ve swung too far the other direction!
I got about twelve episodes into Voyager and I had to stop because the contrast with DS9 in that respect was way too much for me (I was watching concurrently 1990s style).
Oh, I imagine that swing would be wild! I just started into Voyager again, but I went into it after finishing TNG. It’s not quite as bad that way. I normally take some breaks or at least space out episodes a bit more when watching those two.