I do not have a 14.204 kernel and I do not know where to get it from. But I can say that on the 14.203 kernel, I have no problems with neither USBAUDIO.SYS nor USBAUD2.SYS. I have USB audio devices of both types but of course, I only have one of each type.
There are problems with any audio driver if the WPS comes into play. If I play a sound via UNIAUD and access a USB drive, UNIAUD will immediately stop playing. For USB the situation is better in that it will not stop, but a hiccup can still be heard.
WPS is such a lousy piece of SW that it is beyond hope that it will ever become reliable. I have had many,many,many desktop freezes where the only cure was to hit the reset button and often enough, to completely turn off the PC.
USBXHCD.SYS has known problems with isochronous transfers. There is nothing that I can do about it. And it should be plain obvious that a trap in USBXHCD.SYS needs to be fixed in USBXHCD.SYS and nowhere else, regardless of if USB client drivers (like USBAUDIO.SYS / USBAUD2.SYS) are badly written or not. You should not accept that as an excuse.
Ask AN for proper USB isochronous support, in fact, ask them for proper USB audio client drivers too, just in case they answer you that "many USB client drivers are broken and do not follow specs". If they have no interest and it still is important for you, then move to another OS. It is that easy.
Sorry, Lars. I inadvertently misled you regarding the driver usbaudio.sys and core 14.204.
Everything works correctly. The error arose due to the fact that the installer added another line to Config.sys with the driver's loading and the situation with double loading of different versions of the driver arose. As a result, an error occurred when loading the system.
There was no error with the OS4 core, because there I edit the Config file with my hands.
One way or another, but now everything starts and plays in both configurations.
However, there are problems with the stability of sound and Progress bar in PM123. I am surprised to observe when playing the sound of a jerk
Progress Bar back. Perhaps this is due to the incorrect work of isosynchronous transmission.
The sound has not croaks yet, but I spent few tests without the load of the system.