I have had to restart my flight 4 times and lost almost 2 hours of work because of this. I have had the plane for almost a month and it has been working fine. I didn't change anything in my computer or installed/uninstalled hardware. These past 2-3 days, the engine sounds stop working in the middle of the flight for no reason. I can hear other sounds fine, control switches, clicks, packs, APU, flaps, F/O callouts, etc, just not engine sounds. Every time this happens I have to restart my flight. Other PMDG planes like MD-11, 747 Queen of the Skies work fine, it's just 737NGX.

 

And no, I haven't tried uninstalling/reinstalling anything and I'd rather not as that is not a proper solution to this problem. I'm a very computer savy person (and also a hardcore programmer), so feel free to ask me to do any kind of debugging or modification necessary to get to the bottom of this.

 

EDIT: After posting this, on my 2nd flight, the engine sounds stopped completely even after loading the plane cold and dark. It doesn't matter where I load the plane and what panel state I load, I can no longer hear any engine sounds.

 

Another (maybe related or unrelated) problem is, when I load up the plane, I have to manually switch the sound source from my speaker to the headset, it doesn't respect whatever I have in Windows. Flight sim sounds work fine though, so its not like its the entire FSX that doesn't have the right sound source, but just PMDG.

 

Computer Specs:

 

3930k 4.75 Ghz

16 GB 2333 Mhz 9-11-11-31-2

GTX 680 4GB

ASUS RIVE

Samsung 840 Pro 512

Windows 8 64 bit Professional

 

Thanks and otherwise its a great plane.

Have you tried pressing the q key twice? FSX has a bug that when you switch views, the sound gets messed up; it's only fixed by turning it off then on again.

Actually this was the problem. Strangely enough, it doesn't happen in any other plane I have, including other PMDG planes, but the NGX.

Yeah, I guess it's because the NGX has so many sound that it makes FS crazy.