How to debug the element which slows access?

I have HASSIO running on a Raspi3. I have been working on getting all the integrations setup before moving on to working on Lovelace UI. However for some reason, clicking into the different tabs and access seems to have slowed down recently. Supervisor itself takes time to load, so does file-editor, so does the dashboard. I am trying to figure out what is the best way to debug what is possibly slowing down just simple browsing / access to HA.

I have the following add-ons:

  • check HA config
  • file editor
  • let’s encrypt (not actively using)
  • log viewer
  • mosquito (not actively using)
  • node red (not actively using)
  • open z-wave
  • ssh/web terminal
  • samba share
  • unifi controller
  • motioneye