Lumen doesn't work on M1 Mac

Hi everybody,

I installed the UE 5.0.0 version on my new M1 Mac (Big Sur 11.4), it runs smoothly, BUT Lumen does not work. I have no realtime GI, I get the usual pre-lumen “Lighting needs to be rebuild” messages. Lumen is activated in the project settings though.

Did is miss something? Is it not working on a M1 Mac?

Full Disclaimer. I am by far not an UE Pro *smiles