I started out thinking RDR2 was immersive, but the theme park ride on rails main plot missions absolutely killed it, and diminished all the cool world stuff they did.
I think they overdid it and it did not serve gameplay well.
I played a lot of GTA V but in RDR 2 the character is so slow that moving or interacting with anything is a chore. I stopped playing after 5ish hours and that was the only reason.
Echo the same about RDR2. The controls were wonky and the character very slow. Not to mention all the times I accidentally did something to piss off the townspeople.
I hope it's not. I had to stop playing RDR2 after about 4 hours when I realized what a slog it was to do anything in that game. Even walking was clunky in the name of "realism". Please no more of that.
For me, RDR2 remains the benchmark for what kind of immersive experience a game can create. Nothing has topped it so far.