What do you mean by checkpoints?
Read Only Mode doesn't work for me. Checked or Unchecked has no noticeable effect on loading a state. The only way currently for me to see if my movie is synced properly is to watch the movie from the beginning. I save states along the way, and when I find the place where it desyncs, I start playing from a little before, and continue recording. Then I repeat this process, adding a few more seconds of synced input before I check it again.
Read Only Mode doesn't work for me. Checked or Unchecked has no noticeable effect on loading a state. The only way currently for me to see if my movie is synced properly is to watch the movie from the beginning. I save states along the way, and when I find the place where it desyncs, I start playing from a little before, and continue recording. Then I repeat this process, adding a few more seconds of synced input before I check it again.