Also, I have had various glitches for it on my PC, and I've heard many complaints about texture pop ins and freezes. (metacritic.com)
Other various glitches can happen from time to time, such as when your character lands on a new platform. (playstationlifestyle.net)
In addition to these, Dark Souls games have numerous speedrunners that only eliminate the must - kill bosses and end the game, but obviously they take advantage of various glitches and exploits. (segmentnext.com)