Getting back to this aspect of the original inquiry, I would be willing to wager fuselage_lateral_cx may have something to do with a lack of descent during slips especially in the default sim aircraft. It was discussed a few months ago here (https://forums.flightsimulator.com/t/wrong-default-fuselage-lateral-cx-value-suggestion/584405) and here (Adverse Yaw | Slip | Aircraft list - #68 by HomieFFM).
Most Asobo planes are at 0.4 but the C172 AS1000 is set (still to this day) at 4.3, which is more than twice the drag of a parachute. I would be interested to see what your impressions are of slipping with the C172 AS1000 as compared to a different Asobo aircraft (with a value of 0.4).