Windows 10 often boots fast, but much slower at times

I have my OS on an SSD and my computer often boots in about 10-15 seconds but after about every 5 boots, it takes 30-40 seconds. There is nothing unusual in the Event Viewer when it boots slowly (usually some 10016 errors and a 360 warning all the times). Any idea why this happens? It's not a big problem but I'm curious why it happens and I would like to fix it. I reinstalled Windows and it still happens. My memory and SSD drive tests fine. THANKS!

dalchina said:

You could use the Windows Performance Toolkit to record a detailed trace of your boot sequence, however this is a significantly technical tool with plenty of options.
Download and install the Windows ADK | Microsoft Docs

E.g. post #5
Very slow boot-up time (over three minutes) Solved - Windows 10 Forums

and post #5
Boot time issue on Windows 10 1803. - Windows 10 Forums

I disabled hibernation and things seem to be working just fine! Thanks!