This is the shoddiest port I've ever played; the game is borderline unplayable. I'm stubborn and got through it, but my 100% save file clocked around 45 hours. The other ~15 hours of steam playtime was me having to restart and replay sections due to crashing and losing progress. Don't buy this unless you're a diehard fan and willing to put in some technical effort to make this even semi-playable. And even then, just buy and play it on a different system and save yourself hours of headaches.

I love this game, although I am a bit disappointed with the PC port. The other comments mentioning the game crashing are not wrong. Luckily there are easy fixes out there if you google ffxiii 2 patch and ffxiii 2 crash fix. Unfortunately getting it to work on the Steam Deck isn't that easy. Maybe someone smarter than me could figure it out, but it's a difficult problem to fix. The frame rate constantly drops to almost nothing and then the game crashes. I tried it on both windows and linux with the Steam Deck. Even with the fixes I mentioned above, it still wouldn't run well enough to play.
Regardless of all that, I love this game because of the fact that you are going on an adventure traveling through time. There aren't many games out there that have time traveling in them as part of the main plot and not many that get it right when they do. You visit the same maps in different time periods and get to see how things have changed over the years. Honestly, this is the one Final Fantasy game that I feel did not get enough attention for what it is. I wish there were more games like this one.