I think we have enough data and an easily-editable playground to escalate this issue. Who might best help with the apparent friction being incorrectly added by BABYLON or Havok to this PG, where all friction is supposed to be zero?
All material is set to zero friction and zero static friction, lockstep and framerates are controlled. The PG still demonstrates an unknown friction existing that is proportional to the time step (the tstep variable).
Please help or add an appropriate person to escalate this to. @Evgeni_Popov @birnie @sebavan