Export format comparison

Format	File size	Time to save log on host device	Download time over Wi-Fi
--format=json	~1.3 GB	~5.5 min (~4 MB/s)	~1 min (~17.6 MB/s)
--format=export	~1.2 GB	~2 min (~10 MB/s)	~1 min (~17.6 MB/s)