When using HRTF, I experienced constant crashing during the miniboss fight in the Milkman level. At first I assumed it was to do with the high frame rate settings below but I tested all the way down to 60 FPS without change. Replacing the original openal32.dll file fixed it finally. I restored the OpenAL version after the (very short) boss fight and continued as normal.
I have not encountered any other crashes as a result of this file so far.