One site I am working on has their Terms & Conditions content page generated via a content region & I have just checked how many characters there are - 36,051 characters across 281 paragraphs. Some paragraphs have over 10 lines, so is quite considerable. The site is PHP, running the latest version 7.60 & PHP v 8.1.18
Hi Terry, That's quite a substantial block of text.
If you have access to phpmyadmin try changing the data type for the contentdata column in the content regions table to longtext and see if that sorts out your issue.
If you're not comfortable doing that send me an email