Unfortunately it didn't help.
The solution seems to be to add the parameter "nobuf" of the Paragon NTFS driver for the mountpoint.
UUID=4C84D53V4D964CC /tmp/mnt/asus3 ufsd rw,noauto,nodev,noexec,noatime,async,nls=utf8,nobuf 0 0
Now the harddrive spins up earlier and the first video doesn't...