Analyse in new stabilizer, is it CPU or GPU based ?

I have a question about the analyse of the new stabilizer in R14, that it is incredible by the way !!!

For the analyse, is it CPU or GPU based ?

If it is CPU, is there a way in the future to upgrade to GPU for faster analyse ?

Thanks !

some users report that the GPU is not used when stabilizing, so I guess it is CPU. It is fast, but I think the fact that you can't do anything else while stabilizing makes it more painful to use. And another thing to improve would be to be able to select a bunch of clips and stabilize them with one mouse click, not one by one. Is it possible?