Just lately my co-pilot and ATC voices sound ok to start with but then the voice volumes get very soft and almost inaudible. Per your FAQs, I've set Sound, Commkunicaitons to "Do nothing". This did not solve the problem. I've adjusted every volume control, switch, % to Reduce ATC Volume when TGS is active, updated drivers, and settings in my addons. I've changed the order that I load software, all to no avail. Here is what I am running when I have the problem. Win 10, Prepar3d 4.4, PMDG NGX, FS2CREW Reboot, FlyInside, Active Sky, Rex Skyforce 3D. Sometimes the volume is normal at start, sometimes soft. Sometimes it fades out at taxi when TGS starts. I've set TGS volume reduction at 1% and 99%. Neither helps. I've set FS2CREW to not reduce other volumes. I've adjusted all the sounds in PMDG setup. PF3 is version 3.9.0. FSUIPC is latest, 5.151 version. Audio drivers, video drivers are current as of this post.
Problem seems to occur when FS2CREW is used--at least the few times I've tested that. Also, PF3 seems to work fine with other aircraft. I realize the answer may be Don't use FS2CREW. But I'm hoping for the slight possibity that there is another answer.
Thanks in advance.
rd