Windows 10: File Explorer doesn't open for 20 seconds, then acts normally

When I click on File Explorer, it takes 10-20 seconds to respond, then opens as normal and behaves fine. Opening subsequent file explorer windows has the same delay. If I click the file explorer multiple times rapidly there is the same delay then they all open up at once or at least with the same spacing as my clicks.Hitting the Windows key and searching for the file explorer also has the same delay to open. However, just after booting up or restarting my PC it opens immediately. Only after 20 seconds - a minute after booting does it start to delay opening. In safe mode, everything seems to

:)