[FFmpeg-user] Windows 10, ffmpeg concat/demux is slow... part 2

[Erik Dobberkau]

>
> My laptop only has USB 3, and 3.1 gen 2 ports. My SSD is in a drive bay
> connected to the USB 3.1 gen 2 port, and the reader unit is capable of
> 10Gbps connections.
>

Have you tried using TeraCopy for a comparison?