AnimSequence's play rate is doubled when in a SyncGroup

It is because that the RateScale is multiplied twice.

First at UAnimSequenceBase::TickAssetPlayer :

{{ const float PlayRate = Instance.PlayRateMultiplier * this->RateScale;}}

Second at UAnimSequence::AdvanceMarkerPhaseAsLeader :

float CurrentMoveDelta = MoveDelta * RateScale;

It seems like we should remove the Second multiply.

1.Set a AnimationSequence's RateScale to 2.

2.Add a SyncMarker on the Animation Notifications Track.

3.In the AnimGraph , use this Animation and set a SyncGroup to it.

4.In the preview window, the animation's play rate will be doubled.