The original thread in forums. The crash appears only in packaged game, no problems in editor. Maybe it is related to physics somehow, because it only crashes when objects are hit to often. Sometimes it crashes at first 5 min, sometimes after 30 min, so it’s random. All info can be found in original thread. I would be greatful for any solution or workaround (which will not break nothing else ofcourse 
).
If any additional info is required, please tell me.
Hello,
We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.
Thanks
Ok, thx
PS: how can I see callstack in packaged project? I tried to follow steps A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums but it is only for VS and doesn’t seem like showing any inner game code
Ok, the problem was solved by migrating to 4.18.3