Cutscene events execute at a speed that is not relative to the framerate.

[Drahsid]

It seems that none of the time scaling variables that I have effect cutscenes, so they still run too fast. As a countermeasure, I reduced the framerate to the movies framerate variable until I can find another solution.
The framerate scale coefficient effects the speed at which animations play (this is good!)- but this causes issue when the timer used to execute cuts and events that happen in cutscenes does not scale with the framerate scale coefficient. This means that certain things will happen too quickly. I am currently looking into finding and modifying this.

[Drahsid]

In the mega update, cutscenes play correctly, however animations and audio are desycned. I am unsure what the problem is exactly. For those who wish to help, set Framerate_Movies to anything > 60 and play a non-fmv cutscene.