Mysteriously Slow WordPress Dashboard – No Slow Queries [closed]

First you need to find where does the code slow down, try:

  • Deactivating all plugins and then check speed. If this works,
    re-activate them individually( one-by-one ) to find the problematic
    plugin(s).
  • Switching theme then check speed.
  • Transfer the theme and plugins to a new WordPress that installed from
    scratch, then check.

Then write the results.