In T3167#55361, @DataDrake wrote:

Has builtin support for >1 soundcard on Linux

Kind of a problem if the newer version doesn't. That will wreak havoc on anyone with a USB sound amplifier or a PCI(-E) card.

Would love to see jack2 added to the repo because Bitwig Studio sadly doesn't support jack1.

Finally found why setting rtprio in limits.conf was not working.
pam_limits.so must be added to /etc/pam.d/lightdm like this:

Looks like adding "@audio - rtprio 99" to /etc/security/limits.conf does nothing, "ulimit -r" still says it's 0, even after restart. My user is in the audio group.

I did reboot but still no dice.

Thanks for the suggestion but sadly it still doesn't work. When plugged in, PTP devices are still not showing up anywhere in Gnome Files but when I access them with the gphoto2:// link, they show up in sidebar just fine.