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Can't get GPU lightmass to work

I’ve followed all the instructions and using a compatible version (4.21), but can’t figure out why it’s still baking with my cpu. I’ve tried new projects old projects and nothing seems to be working. The gpu lightmass progress bar shows up, but under my task manager it shows only CPU at 100% the entire build.

Beuller…? Anyone?

I have the same problem - did you get ever a solution for this problem ?