Filebeat performance stall sometimes

Hello,
Debug logs here. This logs covers too much period. Interesting period from 2020-08-03 09:30 to 2020-08-03 11:09. I can remove unactual lines. Let me know if you want it.

Also log file is filtered by egrep -h '^[0-9]+.*[A-Z]{4,}' filebeat{.1,} | grep -v 'Publish event'. I think you don't needs a events in this log file.