Disabling Lumen by setting Global Illumination Quality to Low or Medium during cut scene breaks lighting

Hello,

Based on that result, it sounds like the Skylight is using stale capture data after the cutscene ends.

Some options for you to try depending on your performance budgets:

  • You can keep r.Skylight.RealTimeReflectionCapture enabled across all your scalability settings to make sure dynamic changes are always accounted for
  • If not, trigger a skylight recapture on-demand to make sure the right skylight cubemap is used
  • If a recapture is expensive, you can also try using a pre-captured cubemap in these cases to avoid some of the recapture costs

You might also want to integrate the change found in CL: 37388300 on //UE5/Main, that fixes some issues when switching between scalability values with landscapes.

Please let us know if this helps.