The subtitles on the HBO/TCM version of Picnic on Hanging Rock are pretty bad.

If you have access to the Criterion, use that. Whoever did the HBO/TCM ones had a hard time with some of the British or Aussie lingo.... there were about 10 places where something was missed or misrepresented. >!The only one I can cite right now is when Miss Lumley gives her notice, the Criterion accurately gets her line as "My notice, ma'am." HBO/TCM thinks she's saying "I noticed, ma'am."!< There were a lot of bad errors like that. If your only option is HBO/TCM you'll be fine, they're mostly small things.