Start and Stop Alembic playback

Anyone familiar with alembics in UE? How do you start playback of an alembic on a specific frame in your UE sequence ?
Or in other words stop and start playback. There is a ‘Start Frame Offset’ in UE but this is for the frame offset in the actual alembic file. Alembic files imported as Geometry Cache always start playback on frame 1 of your sequence.