You mean the culprit was BigBlueButton running in the same server? As you just learned running BBB and Moodle on the same server is not a good idea. BBB is an entirely different beast: https://docs.bigbluebutton.org/2.2/architecture.html.
Also BBB comes from a different group of developers. They entertain their own support forums - moodle.org is the wrong place. If you don't know where they are, you can find them in some recent posts in the Web conferencing plugins https://moodle.org/mod/forum/view.php?id=7797 forum.
Edit: You've already found it and in action: https://moodle.org/mod/forum/discuss.php?d=413356. So we can close this discussion thread.
Also BBB comes from a different group of developers. They entertain their own support forums - moodle.org is the wrong place. If you don't know where they are, you can find them in some recent posts in the Web conferencing plugins https://moodle.org/mod/forum/view.php?id=7797 forum.
Edit: You've already found it and in action: https://moodle.org/mod/forum/discuss.php?d=413356. So we can close this discussion thread.