When shimmer container width is very long it takes about 10 seconds for component to mount

[maidul98]

We have a track bar for playing audio much like this: https://help.apple.com/assets/61B370B8020DEA0A024710E6/61B370BA020DEA0A02471109/en_US/1b6dbda86aadb5ccfce6a15001317c1b.png

While the track was loading the waveform we wanted the whole track to shimmer. However because the track length is very long ( 5000px), loading the component seems to take very long. Why does the width of the shimmer container affect how long the component takes to be mounted? And is there a way to get around it? Thank you!