Adding a media track(.mp4/avi) into a level sequence causes the editor to hang when scrubbing the timeline, or enabling/disabling the media track.

Steps to Reproduce

1. Create a Sequence and add a camera to it.
2. Key some random movements to the camera track
3. Add a media track and assign a file (.mp4/.avi) media to it
4. scrub the track or enable/disable the media track 

Level Sequence Editor scrubs and functions normally

Editor Hangs

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ComponentMedia Framework
Affects Versions5.3
Target Fix5.5
Fix Commit31627982
Main Commit31627982
CreatedAug 24, 2023
ResolvedFeb 19, 2024
UpdatedFeb 23, 2024
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