So like the other guy, installing this causes me to have problems with SafetyNet. It didn't cause it to fail. Instead, it would fail to produce a pass or fail response. In Magisk or a SN check app, it would cause an infinite spinning loading circle.
Tried that SafetyPatch module, and it caused a bootloop.
Google Pixel (OG), running Pie
I have the same problem. Even more worse, I did a clean rom install and now the mod isn't available in the download section of the magisk manager.
ro.config.vc_call_vol_steps=10 ro.config.media_vol_steps=25 audio.safemedia.bypass=true