AEMemoryBufferPlayer file loading time

Bergerac · November 2016

Is the async AEMemoryBufferPlayers beginLoadingAudioFileAtURL faster loading a larger file than the
sync AEAudioFilePlayer audioFilePlayerWithURL ?

For me it seems that is even slower. Can that be?

I use it this way:

    [AEMemoryBufferPlayer beginLoadingAudioFileAtURL:a1.file audioDescription:_audioDescription completionBlock:^(AEMemoryBufferPlayer *newbufferloop, NSError *err) {
        _loopA1 = newbufferloop;
        [_loopA1 setLoop:YES];
        [_loopA1 setRemoveUponFinish:YES];
        _loopA1.volume = 0.99f; 
        [_audioController addChannels:@[_loopA1] toChannelGroup:_group];
    }];

as opposed to :

[AEAudioFilePlayer audioFilePlayerWithURL:a1.file  error:NULL];

Is there a way to only partially load the file for more speed?
Or would method

- initWithBuffer:audioDescription:freeWhenDone:

bring any advantage ? If yes, how ?

Thanks!