Very slow on the Admin/back end

Hello,

I posted about a problem 6 months ago, but there was no reply. It seems there are no answers to other postings over the past 5 months. Is this plugin still supported?

Over the years, I have put a lot of work into translating two sites, one with two languages (gb and fr), which runs well, although a little slower after adding the second language.  The second site with three languages (gb, nl and id), has always been slower, although still acceptable on the front end, but now has become very slow on the Admin/back end – sometimes minutes before the page finishes refreshing after an edit.

I am using WordPress 6.4.3 and PHP 8.0 and have several other single language sites on the same server with no similar issues.  I have checked/deactivated plugins and tried various cache plugins, played with cron and transient settings, but nothing has helped. The worst issue is that after editing the three languages on a page and updating, it can take minutes to refresh to the page and return to the page with the three language tabs. Before the refreshing complete all three languages sometimes appear in are in the gb window. The page titles are also be repeated {:gb} ….. {:}{:nl ….. {:}{:id} ….. {:} multiple times. Often after editing, updating and checking that the front end is ok, some of the updates have simply disappeared when opened at a later time.

The site is not commercial and is used to provide information with a lot of images and text. It would be a nightmare to have to rebuild it and I am hoping for some pointers to find what is causing the problems so I can continue to use WPGlobus.