Gaps in system performance trends

Hello, I have noticed these… gaps in the trends, see the pictures. I can’t see anything in the logs that matches that timeframe. I came across the issue because operators are reporting “Searching for gateway” messages; I wanted to chalk it to poor networking practices, but this is all internal to the gateway. Nothing in the logs, that I can see.
What could it be, or how can I track it?

Ignition 7.9.4
MySQL 5.7.22
All in the same hardware, no VMs
No Windows events in the same timeframe

Did you ever find an answer to this question? I am curious what could cause this?

Unfortunately, not.