I’m amazed by how well many games run on the Deck. You obviously can’t have every graphic setting cranked, but it’s still pretty good.
I’m not sure of the reasons why other people don’t like the games, but for me it’s primarily just not being pulled into the story and world. So far I’ve tried Horizon: Zero Dawn, Spiderman Remastered, Uncharted: Legacy of Thieves, and God of War, and the only one I actually finished and liked was Uncharted. Horizon I liked the gameplay and world fairly well, but the story was a bit boring. The others I put a number of hours into and quit because I wasn’t enjoying myself. I didn’t have super high expectations of any of them, so I don’t think it’s that. They may just not be my kind of game anymore, although I do like some games that are somewhat similar.