Suddenly videos takes a minute to start

I couldn’t spot anything off in your logs. Have you tried playing the same file on your PC to see if maybe the drive is slow? If that plays okay I would put the same file on USB storage and play it directly from that on the Vero to see if the playback is okay if your not going through the network. If it is then I would run iperf between your PC and Vero to get an idea of how your network connection is doing.