Test xpbd spring split damping mode. 0 = single lambda, 1 = interleaved with damping after (non-ispc only), 2 interleaved with damping before (non-ispc only), 3 = two passes damping after (non-ispc only), 4 = two passes damping before (default).
Usage
p.Chaos.XPBDSpring.SplitDamping [value]
Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.