Earlier quoted context omitted.
My work Linux laptop frequently (several times daily) breaks Bluetooth, breaks audio, does not wake from sleep, wakes from sleep but only shows the mouse pointer on a black screen, stops throttling the CPU down, resets the DHCP-specified DNS server to 0.0.0.0, sends stuff to printers that cause them to just spit out endless blank sheets of paper. The "solutions" to all of these are multi-step manual disasters... unin…
Sounds like a truly broken install. What's the maintenance history of the machine? Have you been patching it from third party repos? Why are you running Jack on a work computer anyway? Back up your documents and do a fresh install. It'll take you an hour and you'll regain stability.
Jack is apparently needed to get Bluetooth to emit audio reliably... but I would not put much trust in that since it didn't fix Bluetooth not working.