If you weren't around (or paying attention) when Batman: Arkham Knight released for the first time, the game's arrival on PC was rough, to say the least. It was plagued with technical issues and for many, it was pretty unplayable, even on hardware that was very capable, or even premium at the time.
In fairness to the developer, they patched out many of the most egregious issues relatively quickly, but not before reputational damage was done to the product in the eyes of many. That said, it's actually probably the best way to play the game in 2026, and there are plenty of downloads available that make the experience better than ever before.
One of those in particular is very much worth your consideration if you're planning on starting a fresh run, and it comes with a bunch of tweaks that you won't want to live without.
Over on Nexus Mods, you should be able to find the download page for the Definitive Edition of Batman: Arkham Knight, a modlist that improves several areas of the game, as well as adding content that you may otherwise have missed playing on PC.
The big addition is the Justice League 3000 appearance,...
