Lumen is disabled when entering my map - until I switch the graphics mode

Hello!

I’m having a really weird issue in my map that might be a bug. Started happening this week (or rather, we noticed it this week).

Basically what happens is, I launch the map in high/epic graphics settings mode, and it’s actually in medium settings. Then if I change the settings to medium, and back to high/epic, lumen gets enabled properly.

Here’s how the map looks like in editor vs ingame (before I switch the graphics options back and forth):


Anyone has any idea why this might be happening? I wonder if the latest update broke something, or if I hit some limits on the number of lights or something…

Any ideas will be appreciated!

Thanks!