no slowmo when downloading multiple videos from icloud

Hi, I'm using a windows 11 laptop to download videos from icloud in browser to SD card and I'm finding they only retain details such as slowmo attributes when downloaded individually. I have over 300 videos to download with varying attributes and even when I select all or just a few and select unmodified originals it doesn't retain things like slowmo unless I download said videos individually.

Is there a way around this. Maybe even to DL videos in sequence with slowmo etc but automatically rather than having to click DL on each one!?!?!?