systemd-analyze blame
Here's is the result of the above. 
1min 21.908s nmbd.service
         46.656s vboxadd.service
         42.123s plymouth-quit-wait.service
         28.556s systemd-journal-flush.service
         28.375s dev-sda1.device
         25.944s ufw.service
         22.637s systemd-tmpfiles-setup-dev.service
         22.525s lvm2-monitor.service
         22.269s keyboard-setup.service
         21.161s systemd-sysctl.service
          9.495s NetworkManager-wait-online.service
          6.860s snapd.service
          4.753s NetworkManager.service
          4.346s preload.service
          4.071s apparmor.service
          3.940s networkd-dispatcher.service
          3.772s ModemManager.service
          3.326s thermald.service
          3.224s udisks2.service
          3.110s grub-common.service
          2.383s wpa_supplicant.service
          2.241s dev-loop3.device
          2.172s bluetooth.service
          2.049s rsyslog.service
          2.031s accounts-daemon.service
          1.755s dev-loop5.device
          1.664s dev-loop7.device
          1.652s dev-loop6.device
          1.608s dev-loop2.device
          1.601s dev-loop1.device
          1.580s dev-loop0.device
          1.549s dev-loop4.device
          1.229s console-kit-log-system-start.service
          1.216s avahi-daemon.service
          1.186s lm-sensors.service
          1.167s phpsessionclean.service
          1.162s alsa-restore.service
          1.107s gpu-manager.service
          1.042s binfmt-support.service
          1.017s smbd.service
          1.009s systemd-rfkill.service
           998ms networking.service
           984ms polkit.service
           811ms systemd-modules-load.service
           693ms console-setup.service
           680ms apport.service
           670ms systemd-logind.service
           643ms snap-gimp-189.mount
           621ms systemd-udevd.service
           586ms ubiquity.service
           585ms dns-clean.service
           547ms snap-snapd-3646.mount
           538ms pppd-dns.service
           491ms systemd-remount-fs.service
           467ms dev-hugepages.mount
           465ms sys-kernel-debug.mount
           461ms dev-mqueue.mount
           409ms snap-core18-1013.mount
           401ms systemd-udev-trigger.service
           378ms snap-kde\x2dframeworks\x2d5\x2dcore18-29.mount
           372ms systemd-journald.service
           354ms systemd-backlight@backlight:amdgpu_bl0.service
           353ms snap-core18-1049.mount
           322ms snap-gtk\x2dcommon\x2dthemes-1198.mount
           322ms lightdm.service
           297ms upower.service
           267ms packagekit.service
           241ms resolvconf.service
           226ms swapfile.swap
           222ms systemd-user-sessions.service
           181ms snap-kmag-18.mount
           177ms systemd-timesyncd.service
           153ms systemd-resolved.service
           152ms snap-core-7270.mount
           147ms blk-availability.service
           138ms systemd-update-utmp.service
           129ms console-kit-daemon.service
           117ms kmod-static-nodes.service
           106ms systemd-random-seed.service
           103ms 
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            90ms systemd-tmpfiles-setup.service
            88ms setvtrgb.service
            74ms snapd.seeded.service
            38ms hddtemp.service
            17ms plymouth-start.service
            16ms resolvconf-pull-resolved.service
            12ms proc-sys-fs-binfmt_misc.mount
            11ms ureadahead-stop.service
            10ms plymouth-read-write.service
            10ms systemd-update-utmp-runlevel.service
             9ms rtkit-daemon.service
             5ms sys-fs-fuse-connections.mount
             4ms sys-kernel-config.mount
             3ms openvpn.service
             1ms snapd.socket