>>35357904>KantoAll the early stuff, it's just got no variety at all and you're going to use the same mons over and over again. As I've played Kanto so many times I find the game doesn't really get that interesting until after Rock Tunnel.
>JohtoThe grinding, especially for the Elite Four and Red. HGSS made it no better as it's using the shitty Gen 4 engine. Whirl Islands are pretty shit too but not as bad as the grinding overall. The grinding literally kills the game.
>HoennMost of the endgame. The levelling is a bit steep early on with Brawly basically right after Roxanne as well.
>SinnohThe Elite Four grind is horrendous, especially in DP. The very beginning also sucks, I feel like Sinnoh doesn't get even vaguely interesting or varied to go through until after Eterna, which takes a while.
>UnovaNothing really in BW1 once I'm past the first gym, but BW2's earlygame is not one I find particularly fun. Once I'm past Pokestar Studios and into Castelia, it picks up.
>KalosThat fucking pace breaking palace section. Also there's a fair few sections with shitty cutscenes early on. It gets better after that.
>AlolaMostly the beginning cutscenes. I can get through the rest once I get past Hala quite easily. SM's ending goes on way too long though, at least USUM shortened it.