In Windows, disabling exclusive mode sends all music - after it has been processed by Audirvana (upsampling etc) - to the internal mixer by Windows.
Windows will then resample the sound to the bit depth and sample rate that is set in Windows Audio Settings (click Speaker symbol bottom right corner>Select a sound output (other speaker symbol)>More Volume Settings>then click the ‘>’ next to your output system - you will see the target sample rate under Output Settings>Format)
This means that if you chose to upsample to 192k but your Windows target sample rate is set to 44.1k playing anything will in the end play as 44.1k anyway.
Windows will resample all other sounds that are coming in from other apps as well, so they can be mixed into that same sample rate.
So yes it should be possible to let Audirvana play in non exclusive mode - if you accept that everything will play into that one sample rate set in Windows audio settings). But otoh, then a lot of users might not understand why Audirvana is no longer resampling to the sample rate they set in Audirvana. I trialed Roon the last 10 days, and there you can select to set the output in non exclusive mode but that only works for Wasapi. Asio will be in exclusive mode anyway. And when you switch from Wasapi non exclusive to Asio (exclusive) and back to Wasapi (non exclusive) then suddenly Roon no longer plays so Roon apparently forgot to release the output channels used by Asio. I told Roon support about it, but their forum is one bunch of victimblamers and other shrills. They don’t answer like : “yes we will look into this” in stead they avoid to come up with a real solution and answer : “restart roon” or “use exclusive mode only” which is stupid as you can select to disable exclusive mode there.
To conclude : me too I would like to have an option in audirvana to disable exclusive mode when using Wasapi (as Asio seems not possible - at least not in Roon) when using other programs. But in the mean time you can just stop playing music, and click the “unlock” symbol so your other program (game) can play sounds.
Happy New Year btw