Alternative to Audirvana and Audrivana Studio -- how to stream wirelessly?

A renderer/streamer won't make Audirvana glitches go away, it will allow you to switch to more alternatives...most have DLNA/UPnP, many incorporate Roon(which includes Tidal & Qobuz), others have streaming service direct connections. You can use a tablet or phone as remote with many apps depending on what renderer you get. Some brands have their own app, others allow any OpenHome app(e.g. Linn Kazoo, Lumin app).
FWIW, I find the Roon user experience miles ahead of everything else and love controlling playback on multiple devices from mac/iPad/iPhone. Watch Hans B's youtube on Roon 1.8 if you want a good demo. Cheers,
Spencer

Is your Hegel Roon-Ready?

@petar3 You can run Roon Core on your mac. It just isn't the best sounding option. Then you would just need a Roon Endpoint. Maybe someone can recommend one that's very low cost that would connect to your Hegel. A used microRendu goes for ~$300. Raspberry Pi probably has something under $100. 
You can also do a free Roon trial on your mac and if you love the experience, then decide on if you want to change your hardware or buy a longer subscription. Cheers,
Spencer

Yeah, it can certainly be frustrating. YMMV, but I found that going to a separate streamer with a good power supply and files on a NAS to huge step forward. Many agree that the root of the issue is that computers run many processes unrelated to audio, require relatively higher power and electrical noise, EMI, RFI all make things worse. This led to separate low-power devices used only for audio, optical isolation, USB cables with separated 5V power lines and many other approaches that seek to minimize noise. Less noise = better music. audiophilestyle forums are full of talk on all these subtopics in gory detail ;-)   Cheers,
Spencer