No audio problems for me, either. Framerate is great for the most part.
I did get a fun little glitch that occurred towards the beginning of the game, during the first "stealth" part when Lara is captured- I got seen seen and shot up with arrows, but instead of restarting from the checkpoint, Lara got back up and I was able to roam around, although the game kind of forced me to keep moving forward. The enemies were oblivious to me and I fell off a ledge, but Lara remained undead and while I could no longer control or even see her, the game continued on and let me move the camera around a bit.

Didn't happen again when I reloaded the checkpoint manually.