LG Ultragear+ monitor blacks out frequently

As per the title. My LG ULTRAGEAR+ 27GR93U monitor randomly blacks out for 1-2 seconds. The frequency is very inconsistent, sometimes it'll happen 3 times in 2 minutes, sometimes I can use the PC for over an hour without any problem.

I don't have this issue with my other monitor. I have tried multiple cables, both displayport and HDMI.

The weird part to me is that it doesn't completely cut out because if if I'm fiddling with the monitor settings while it happens, the little overlay at the bottom stays on screen.

I've tried updating my GPU drivers, nothing is popping up in Windows events as far as I can see. No obvious spikes in task manager. No particular program triggers it as far as I'm aware. It can happen when I'm browsing or when I'm playing video games.

The monitor was sent in for repairs but came back as "No problems detected".

If more info is needed like certain system specs, I'm happy to provide them.