If you feel blue devil is part of your issue you could always try replacing it with an alternate power manager such as:
https://wiki.archlinux.org/title/TLP
https://wiki.archlinux.org/title/Powertop
For further information see:
https://wiki.archlinux.org/title/Power_management
I would try replacing blue devil with TLP first, as this suggestion solved an issue with a crashing system a little while back.
You could also try replacing the Bluetooth management utility bluez with blueman to see if there is any improvement. This switch can also sometimes help with severe Bluetooth complications.
To install the blueman package, issue the command:
sudo pacman -S blueman