Ambient music in Toussaint experiences delays when starting, i.e. music does not start playing instantly after a fast travel, takes 2-3 minutes. After thatm the music only loops once, and stops completely when interrupted by other sounds (flute players, live concerts etc). It is a really annoying bug as it kills the whole atmosphere of Toussaint. Battle music is also choppy and does not end as fluently as in other areas such as Velen/Skellige. Instead it stops abruptly without an ending sequence.
GOG support only told me that mobile graphics are not offcially supported.
Anyone else have this very pertinent problem? Please help.

Sounds like a hardware issue. Post your complete specs, including (but not limited to) audio.

MSi GS60 2QE Ghost Pro
Intel(R) Core(TM) i7-4720HQ 2.60GHz
1TB HDD
16GB
Windows 10 64-bit
Nvidia GeForce GTX 970M (3GB) with latest drivers
Intel HD Graphics 4600
DirectX 12
Speakers (Realtek High Definition Audio)

Link to DxDiag : https://www.dropbox.com/s/6jfknfru48n75y2/DxDiag.txt?dl=0

Verified game caches.
Issue persists with Steam version also.

Please help :/

There's your problem. Realtek integrated audio is about as bad as audio gets. You need a real sound card.

While Realtek Integrated Audio really is crap, it tends to work at the very least - I'd try reinstalling your drivers first, look for them at MSI's support site - I'd love to give you a link, but MSI's website is horrible.

That said, Hickory's right - Realtek Audio is crap and many manufacturer versions of its drivers can make it even worse, which is brilliant. Getting a USB sound card would probably improve your gaming experience. Considering it's a notebook, getting USB headphones with a dedicated sound card can make it even better.

I reinstalled every driver version I could find but the problem still persists. Even my Razer Krakens (inb4 razer is overpriced bullshit) with their own sound cards could not solve it.

I read somewhere that B&W used a different sound localization mechanism unlike the base game, maybe that's where the issue comes from. It just seems odd that music is perfect everywhere else.

I don't know what else to do so I give up. Thanks anyway. I don't think I will be able to complete B&W with this freaking annoying glitch.

The thing is, The Witcher 3, as with all ***** star games is absolutely not designed for notebooks. That's the long and short of it. Want to play demanding games? Don't use a notebook.

Ah yeah, a hardware issue, that's why searching on Google promps me with an indexed post that occupies the 1st place on the search results, right? Lol, you can't be so full of shit :)

Try replying when you have something useful to say.

Nahhh I wouldn't reach 4748 posts in 8 years if I did that...

The thing is the buggy music is true in every hardware no matter whatever the soundcard you use.
Wanna see my specs?