Ok, so if I was using different software and equipment on a different computer running a different OS - I could try something else. That sounds straightforward enough!
I wish I could use my TBC, but it died last year and I haven't been able to replace it. But what I am seeing here does not appear to be sync errors. The playback lengths tend to be similar when the encodes are done with similar settings. The 730.1 MB threshold indicates to me that this is a software/system problem. I have seen instances like this before, where something was made for an older Mac, but a much later one is somehow "too slow". It probably isn't, but that's what it tells me.
I wish I could use my TBC, but it died last year and I haven't been able to replace it. But what I am seeing here does not appear to be sync errors. The playback lengths tend to be similar when the encodes are done with similar settings. The 730.1 MB threshold indicates to me that this is a software/system problem. I have seen instances like this before, where something was made for an older Mac, but a much later one is somehow "too slow". It probably isn't, but that's what it tells me.