Allow rotobrush to use more than one core by allowing user to rotobrush multiple frames
Rotobrush should have the option of allowing me to rotobrush frames every certain number of seconds. For example if I have a 15 minute clip, I could rotobrush one frame for each minute of the clip. Therefore each of those minutes could be handled by a separate core on my computer. As I have 16 cores, each core would only have to process one minute of video rather than one core doing all the video sequentially.

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Jakob Eriksen commented
Roto brush v2 is major game changer. That is why it is so important that adobe fixes all the bugs. This need to be reliable even on long sequences with highres footage. It is important to have the ability to have a rotobrush v2 sequence to render overnight to extract a mask, without memory leaks an craches.
Rotobrush code should be optimised for GPU.