Browser plugin lagged really bad on video loops. These are used in some scenes for tail whack of for water effects in Shelly and Zoe scenes. But there is none in Goldie missionary scene.
I don't experience video (re)start lag in Flash Projector 11, neither Trong nor Adobe.
Some scenes get slow when zoomed in.
However, my computer is 10 years old i7 and it still run these quite good. Surprisingly there is no difference in GPU, it runs the same on CPU integrated GPU as it runs on my recently added up to date GPU. So the Flash player doesn't use it.
Currently I'm working on Ava sound. I have to tune up sound synchronization to animation speed, specially to different animation loop periods of different points of view for the same speed. Not just different playing speed but Crow didn't bother to make these equal frame count.