Roto brush taking too long to propagate and freeze a 1/5 second clip

[Aleksandar5E78]

Hello. I've been having this issue many times when trying to freeze and propagate a finished roto brushed layer in a composition.

It takes up to 8h to finish and it constantly gets stuck and lags on every percent and it annoys me.

It wastes me so much time and i don't know how to fix it. Also the preview window completely went gray when propagating the layer and i can't see it. Propagating is very slow and it takes about 20-30 minutes to propagate a single frame and that can take ages to finish it all so if anyone knows a solution for this and how to possibly make it faster, please let me know!

Thanks in advance!

[Jordan Clay · Accepted solution]

roll back your AE version to 18.1 this fixed my roto issues same ones youre having. i couldnt do any roto without freeze.

[Aleksandar5E78]

Thank you! I'm gonna try it. Does the 18.1 version of After Effects have the Rotobrush 2.0 and can i import the project file from the version i'm cureently using? I'm using the 2021 version and i wonder if that will work.

[Jordan Clay]

Yeah 18.1 has roto 2.0 and best quality. Not sure if you can import from other project try it out and let us know so we can spread the word!

[SonicShinji]

Same here, it's going to take me 1 day to render 44s of rotobrushing. Looking for tutorials to improve workflow and reduce time. My computer is not that bad at all. It's a 2020 Dell XPS 8930 16gb. What's some advice or workflow that helps reduce time when freezing roto? Thank you!