VEI 3.0.2 Chronos file sizes all over the place?

In 2.6.4 slow motion file sizes were all consistently the same, extracting to TIFF. In 3.0.2 this is what I’m getting:

Any ideas?

Tiff allows for some level of lossless compression. That was disabled in 2.6.4, but not in 3.0.2.