I have stayed in there searching for fun in some really bad games but if we're talking about the 40+ club that's actually a rare set because it requires a special sort of deception. If a game is truly terrible I'll be out in 5 hours, if it seems like it could be as an action game, maybe 10hrs. With an RPG things usually move slower and plot might make up for it so maybe 20 before I drop it. However there is one clear winner there...
Starfield - 150 hours of frustration and wasted hope
The most deceptive bait-n-obfuscate game of all time. Very particular wording there because a bait-n-switch would make you quit faster. Starfield truly presents itself in such a way that you feel like it is about to open up just around the corner no matter how far you get. You think surely the story is just about to get better, the characters and relationships, the skill trees will become fun after this next barrier, the combat will open up once it allows these abilities and there will be new enemies, the ship battles and shipbuilding will become good, I'll find new things on planets, etc, etc. Just like, surely... SURELY NO ONE WOULD SPEND SO LONG DEVELOPING A LITERALLY ENDLESS PILE OF ABSOLUTE MEDIOCRITY THAT ISN'T EVEN FARMING THEM MICROTRANSACTIONS... and yet that is what they did.
And yet it isn't just mediocre. The GOOD PARTS are mediocre, the things you focus on. Yet all blended up with all the parts you focus on are five hundred trillion little obstacles of design. Everything is incomprehensibly designed to make you stumble over it in trying to do any action you might want to do. A part of your mind thinks, okay, surely this is also some sort of misunderstanding. No one would ever make something to truly shitty and failing at all the most basic things you do literally tens of thousands of times in a playthrough. It must just be unfamiliarity. Once I get more practice I'll see the sense in it, become accommodated to it, whatever. But that never happens. It really is true that everything gets in the way of itself. Nearly every single facet of the game is like a "nailed it" or "you had one job" meme.
This is the only game I have played for 150 hours where my opinion of the game went nowhere but down for the entire 150 hours. It has absolutely destroyed all respect I once had for Bethesda (dev studio not overall as a publisher) and seeing the departures from the company that I have seen do nothing but reinforce that. I hope that somehow in some completely unexpected miracle, the new oversight from Microsoft results in a big turnaround.