Play rate not affecting Level Sequence

Development Programming & Scripting C++
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1

Hello! I am trying to write code to properly play through a particular sub-sect of my LevelSequence. I am able to get the correct range, but the playback speed does not seem to be affected. I am making sure to set the PlayRate of FMovieSceneSequencePlaybackSettings but nothing seems to come of it. Here is my code:

void ASequenceManager::PlayRange(ULevelSequence* _playSequence, float _startTime, float _endTime, float _speed)
{
	ULevelSequence* currSeq = MovieActor->GetSequence();
	if (_playSequence != nullptr)
	{
		if (_playSequence != currSeq)
		{
			MovieActor->SequencePlayer->Stop();
			MovieActor->SetSequence(_playSequence);
		}
	}
	else if (currSeq == nullptr)
	{
		return;
	}

	MovieActor->PlaybackSettings.bPauseAtEnd = true;
	MovieActor->PlaybackSettings.PlayRate = _speed;
	
	FMovieSceneSequencePlaybackParams startParams = {};
	startParams.PositionType = EMovieScenePositionType::Time;
	startParams.Time = _startTime;
	startParams.UpdateMethod = EUpdatePositionMethod::Jump;
	MovieActor->SequencePlayer->SetPlaybackPosition(startParams);

	FMovieSceneSequencePlaybackParams playTo = FMovieSceneSequencePlaybackParams();
	playTo.PositionType = EMovieScenePositionType::Time;
	playTo.Time = _endTime;
	playTo.UpdateMethod = EUpdatePositionMethod::Play;
	MovieActor->SequencePlayer->PlayTo(playTo);

	MovieActor->PlaybackSettings.PlayRate = _speed;
}

Any help here would be appreciated. Is it possible I have to set the sequencer update method to scrub as opposed to play? Via:
playTo.UpdateMethod = EUpdatePositionMethod::Scrub;

I am unsure the difference here, and I have been struggling trying to find information on the difference between play and scrub.