There are some values in the database under rules_values that I think affect this. What I have currently (with no bouncing or floating issues) is:
Code:
Map:FixPathingZWHenLoading - true
Map:FixPathingZAtWaypoints - true
Map:FixPathingZWhenMoving - true
Map:FixPathingZOnSendTo - false
Map:FixPathingZMaxDeltaSendTo - 12.0
Map:FixPathingZMaxDeltaLoading - 12.0
Map:FixPathingZMaxDeltaMoving - 12.0
Map:FixPathingZMaxDeltaWaypoint - 12.0
Tweaking the numbers may help.