UE 4.25.4 - Builds on Mac produces much higher brightness?

I have the problem, on MacOS Big Sur and UE 4.25.4 that my shipping MAC Builds have a much higher brightness than in the editor? I never had that problem with UE 4.22 etc so i want to ask if someone experienced the same problem. I even set directional light to 1 lux etc. but had no chance. Any ideas with that? thank you in advance