Do you have any source for the system property affecting all tables? All the documentation I've found states the exact opposite (e.g. https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0855795), and it certainly doesn't seem to be working for anyone who's tried it (e.g, https://www.servicenow.com/community/developer-forum/how-can-i-limit-the-number-of-records-returned-... and Manu4 in this thread).