Variauidio: Bounce or Flatten?

If I want to make permanent all my Variauidio settings, should I use “bounce” or “flatten”? I’ve read a few other posts saying that “flatten” uses a realtime algo and doesn’t sound great, what algo does “bounce” use? I want to free up cpu usage but I’m not sure what the best answer is.

As far as I,m aware variaudio only works off one algorythm, the ‘solo’ one it tells you its awitches to when you first make a change. This being the case I’ve always assumed that bounce and flatten will provide identical results on clips that have been variaudio edited.
Any one able to confirm this?