True depth map accuracy worse on streaming mode than photo

Hi, it seems the accuracy of the true depth map is far worse when streaming (using iPhone 13) with similar artefacts as shown in this post: https://forums.developer.apple.com/forums/thread/694147. However when taking static photos, the quality is pretty good, despite resolutions being the same (480x640). This is for an object <1m distance. Does anyone know how I can improve the accuracy when streaming?

True depth map accuracy worse on streaming mode than photo
 
 
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