Simple (Date Sliced) Time Distribution w/ Inactive Relation

I found the solution, the USERELATIONSHIP function has to be wrapped in another CALCULATE like this Measure2 = CALCULATE(CALCULATE(...)), USERELATIONSHIP(..))). Weird because it also clearly had an effect when using it inside a single CALCULATE with the other functions. My lack of DAX knowledge prevents me to properly understand whats happening but fortunately it works now.