Problem with WordPress/Theme Cache

Hey,

I think I have a problem with the cache of WordPress. At least everything looks like it:

Every time I create a new page, all changes are shown correctly in the preview first… But after some time (maybe 1-2 hours or so(?)) all changes I make suddenly are no longer shown in the preview. No matter if CSS, HTML or text or anything else. But the page itself is still displayed correctly. So it’s not a white screen of death.

There are no specific things I edit before it stops working. That’s why I can only name the time as the “anchor point”.

I have already read through some things, but nothing has helped so far:

– logging out and in to wordpress
– installed a cache plugin (completely emptied the cache)
– cleared the browser cache (chrome, firefox…)
– merging and compressing of css + javascript disabled in the theme settings
– changed browsers
– increased the memory in config.php to 128 MB (my hosting provider usually supports enough memory by default)
– all plugins deactivated

————

With the plugin “SimpleCache” I could empty the cache in the preview, then the changes were displayed. But from then on I had to empty the cache every time (!) I went into the preview.

As soon as I create a new page, all changes are displayed correctly again… But only for a certain time.

– It can’t be due to the browser’s cache, because the page is displayed correctly when I log out of WordPress.
– It doesn’t matter if the page is on “draft” or “published” or anything else.

I don’t know, if the problem exists for blogposts, too. Anyway, a switch to a “post” is not an option for my purposes.

-> Maybe a possible solution(?): should i increase the memory in config.php to 265 MB? (I haven’t tried that yet)

I am not an expert in WordPress or Server or HTML/CSS etc. – So maybe it’s just a small change I need to make to solve the problem.

-> I haven’t made any changes to functions.php or anything crazy in quick css yet. Furthermore, I don’t use a child theme.

I inserted the link to my website in the private section.

Many thanks for your help in advance!

Kind regards,
Nicolas