Assuming it's pacing and not characters and premise. As a kid I didn't care much for Star Wars. I was more into Star Trek, Transformers, Dr Who, and Buck Rogers. All the same era, four of the five were glitzy (even the animated cartoon), yet despite the lack of glitz Dr Who kept my interest. I wasn't fond of the prequels either - at least the OT had some intimacy behind the laser sword fights. Something the Rey trilogy - one that I couldn't label as "slow" - has but those prequels lacked. The dogfights in TLJ were far more compelling, and never mind the franchise has never been even remotely scientifically accurate. But the prequel swordfights were just a blue of blue, green, and red on screen at a campy pace, pretending to be epic. The point I again strayed from is, not every kid of the same age will like the same franchises or even genres. It's fascinating what works on some kids, or others, but not all.
Even more interesting, once someone is exposed to faster pacing, it's hard to deprogram them back into more casually paced stories. Heck, even TWOK - for all its strengths and atmosphere - feels a tad slower at times today. And music I accidentally sped up in my player sounds a lot more enthralling at 1.3x, but shifting it back to 1.0x and what used to be deemed "fast" is turtle slow by comparison and this ancient stuff was made in 1990 and was deemed "high paced" for its time.
Styles of television making change and even comparing stuff from the 1950s to 1980s there are huge shifts and improvements. And yet the old stuff doesn't faze me with its often-padded nature as much as it does for others, it seems. And it's not like the older shows are free of plot holes, quite the contrary... so it's just that, a change in style.
A teaser is found on youtube: "Princess Leia - The Rescue | Star Wars Galaxy of Adventures".
I just watched it in full and thankfully it's 72 seconds long. Try watching it and form your own conclusions about these short star wars treks. The graphics look like they're all on ketamine or cocaine with those insanely dilated eyelids, no wonder Luke couldn't shoot straight despite the wamprats in his speeder and that little death star thing?) The original audio was definitely recut to change the story in key scenes. They're actually cute in a way, but aren't these supposed to be verbatim adaptations of the movie scenes? Won't kids get upset if they ever read the novelization or see the actual movie? Imagine all the school brawls that are to come because the kids argued over the changes and because they're kids and haven't been taught to not beat each other up...
I miss when Leia was unmoved and sardonic when she was rescued, which had a strong enough impact in 1977 while showing the movie itself was self-aware in subverting sexist cliches. But it's not 1977 anymore, I agree. Still, the animated short felt like a parody that SNL would do. Now Luke wasn't my childhood hero, but I'm beginning to understand why the more zealous fans are getting upset. But I wasn't a fan of the OT remasterings for the bulk of the changes made for those as well. The current trilogy offers plenty of chances to do bigger and better things and potentially more believably for many characters. All we've seen is yet-another-death-star and mostly rehashes, but I still maintain Luke becoming Icarus and ending up even worse than Anakin had was sufficiently compelling. For me, anyway, some fans loathed the direction Luke got and I can't blame them. And Holdo to Poe, it didn't matter: Po was in the wrong - chain of command is not a bad thing. It was that simple, or that's what I got out of it. And yet all I can remember from the PT are the flashy not-epic lightsaber bum rush scenes and, of course, "NOOOOOOOO!!!!!!" at the end. The PT is still worse, which says a lot since the sequel trilogy lets "the force" become "any old magic when convenient". (holding back bolts was cool, transferring matter (water) all that distance was a bit harder to swallow, even more than Leia's force pull to the ship when - after all that time - she should have been dead. Adrenaline rush aside, where did she learn to use and hone her powers? Or does The Force come to individuals differently, sometimes as fast as a dream and others are slow? Or is there such a thing since Luke never had the force, he had his self confidence to time the shot like how he had practiced on rats all his life and Han's talk of there being no such thing was the reality because the 1977 flick was more subversive than anything else?

There's a plot point from 1977 nobody wants to touch. But it's a fluke, there is a Force in Star Wars and it arguably can come to people at different times in different strengths. Fraternal twins aren't identical twins either, but I'm digressing...