It won't help much. Try to remove
quieton GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub to get a verbose boot and be able to see if something is slowing down the boot.
It won't help much. Try to remove
quieton GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub to get a verbose boot and be able to see if something is slowing down the boot.