New comment by daniel-eys on void-packages repository

https://github.com/void-linux/void-packages/issues/20051#issuecomment-598959076

Comment:
> I get `64`...

This is the issue here.
The jack package installs `/etc/security/limits.d/jack.conf` which permits the audio group to access higher resource limits:
`@audio	-	memlock	unlimited`.

After adding your user to the audio group, have you logged out and in again for the change to take effect?