Forum really slow in private mode?

Hi all,

For some reason, starting tonight, my website is loading consistently slower in private browsing mode on Firefox.

Regular browsing windows seem to load at the same speed they did before.

I also got a 504 error when trying to access the site through private browsing a few minutes ago.

Any idea why this might happen?

What is the website in question?

The website is - https://churchofproz.000webhostapp.com

However, it seems like the slowness stopped a few hours after I posted. Is it normal for there to be random periods of slowness?

Normal mode you’ve got your cache but private mode it downloads the data each time fresh?
Unsure seems fine on both modes on my end.