FrameData's deltaTime is unscaled by design. Its scaling is different depending on the DirectorUpdateMode. Sometimes Time.timeScale is accounted for, sometimes it's not, depending on the mode. Moreover, nodes in the playable graph can have non-unit speeds, that also change the scale of a particular node's deltaTime (if itself or an ancestor has a non-unit speed). As such, the FrameData's deltaTime should be multiplied by its effectiveSpeed to get the correctly scaled value.

However it's true that the naming is not consistent with Time.deltaTime. Unfortunately, changing the public API is highly risky, as a lot of people may already rely on it. We're going to update the documentation to at least bring to attention that FrameData.deltaTime is unscaled and should be multiplied by effectiveSpeed if the scaling is needed.