Windows 7 fix!
(...pretty sure...)
This will be a quick update but we've completely reworked all of the cutscenes using Unity's timeline feature and it appears this has fixed the nefarious Windows 7 crashing bug. Huzzah!
We say "pretty sure" up above because we've had several beta testers report success we haven't heard back from some others so we're running on partial information.
Regardless it's a big step and we're super happy to have found this solve.