Stop guessing and start investigating with these systemd tools.

https://itsfoss.com/systemd-troubleshoot-tools/

New to Linux? These 4 systemd Tools Help You Fix Common Issues

Stop guessing, start investigating. Here are 4 systemd tools that make Linux troubleshooting easy.

It's FOSS

@itsfoss I'd add a warning against misinterpreting the results of systemd-analyze and disabling stuff like systemd-networkd-wait-online.service (which can be wrongly understood as delaying important services from starting).

More info:
https://www.reddit.com/r/linux/comments/1kcg7b0/systemdanalyze_blame_doesnt_say_what_you_think_it/