Thank you @aertmann,
Probably the topic is named incomprehensible for this challenge. Maybe other neos-user (also @dimaip) have stumbled over the same problem and have found a solution/work around for it.
But not read about «ContentModule-built.js» or «speedUp Backend». Maybe is better to find for solution-helper and seeker (with same problem) under your notation «Problem with pages with a lot of content elements and Aloha initialization».