If the Core is indeed crashing and replacing the hardware does not solve the problem you're experiencing, then I'll have to suspect the Roon library is corrupted, or one or more particular music file is crashing it. Please rebuild the music library from scratch - or perhaps just add Tidal / Qobuz music first without including your own files.
In case replaced hardware and rebuilt library does not solve the crash problem, or a music file is crashing Roon, I'm afraid you'll need to create a support thread in Roon forum, have Roon staff enable diagnostics for your account, then they can study the crash log.
We’ve rebuilt the Roon library several times. I think our next step is a more powerful computer. An i9 or something.
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