Might be good to search the web for Xonar and your motherboard model keywords to see if someone reported an issue. For example, some have an issue where the right channel volume gets muted regularly, requiring to restart the system or restarting the sound card in order to fix it. Most of these reports seem to be with ASUS motherboards. There are some incompatibility issues with some motherboards.The advertised EAX emulation feature, called GX, doesn’t work in most cases and it will cause applications to crash or cause your system to crash (BSOD) periodically when it's enabled.You can read more about Xonar and Windows 10 compatibility here. At the moment the cards work fine for most owners, just a few experience system crashes or other issues. Windows 10 compatibility might be an issue with future Windows 10 versions.More details, possible solutions and a list with compatibility reports here. Certain systems with B350, X370, B450, X470, and probably A320, X399 and X570 chipset motherboards may crash when trying to install the drivers or when changing various soundcard settings. Xonar Essence STX II, Xonar D2X cards and other Xonar cards may not be compatible with certain Ryzen motherboards.Xonar Essence ST, STX, STX II and possibly other Xonar cards and Windows 7/8/10: Some owners get random high pitch noises that is so loud it could damage the ears ( #1).

This means no new drivers with fixes from them.

As of January 2017, the cards are no longer supported by the card manufacturer(ASUS) or audio chip manufacturer (C-Media).

Asus xonar dg audio driver