├─178626 /usr/bin/tvheadend -f -p /run/tvheadend.pid -u hts -g video -6
Did you edit /etc/init.d/tvheadend
to add the parameters?
Try looking for a line ARGS="-f"
and adding the parameters there.
I also tried to play a few of the streams with VLC. Some stalled after about 5 seconds and some streams seemed to work. It could have been geoblocking.
Also: Please describe your 'crash' in a little more details. Is the TVH binary actually crashing, or does it become unresponsive? Where you you see this 'crash'? What messages do you get?