This update should fix the sound issues you all have been having.
I also configured Steam to install the "Visual C++ Redistributables" along PPL, which may solve some installation issues.
Finally, I tried to improve the VSync. No idea if things improved on that front because that always worked on my computer™.
Sorry about all that, I don't have a whole lot of experience releasing PC games.
Thanks for your patience!
Changed files in this update