I tried playing Outer Worlds but my main complaint was that I was constantly being overwhelmed by just how garish and visually busy the game was. The area that I was exploring was a bit too colourful, a bit too cluttered, and enemies didn't stand out well enough for me to differentiate them from the background visual elements. I got frustrated with the number of times I wouldn't notice an enemy until I was right on top of them.
Another issue I faced was a classic dissonance seen in most RPG/FPS blends - it's where you can equip a high powered rifle and shoot an enemy in their unprotected head only to watch them shrug the shot off with ease as their HP bar drops by a measly 10%. It ruins immersion for me, just reminds me that I am not actually an adventurer exploring a strange new universe, I'm just a guy playing a video game.
Apart from that, there was a lot to like! I liked the story that I got to experience, the characters seemed cool, the quests were interesting. I just couldn't push past the things that bothered me to see more of the stuff I liked.