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I have a 9.5 second clip where I am rotobrushing a character in a video game. Its about 550 frames total and around the 47/550 mark it locks up AE completly. It also seems to propagate slower and it progresses. I'm still really new to AE and after scouring the forums, youtube, google, etc. I am here asking for a bit of guidance if possible. I see people using roto on youtube and it works perfectly. Im not sure why mine locks up.
Drivers are fully up to date as well.
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Roll back your After effects version. 18.2 and 18.2.1 did this for me. Roll back to 18.1 and youll be fine. Belive me i had the same problem and spent hours on drivers for my GOU, Chipset, Motherboard, every driver possible. Antivirus, EVERYTHING!!! As soon as I installed 18.1 everything worked fin again and i could do Rotoscope on 100+ frame composition. Before this after 20 or so frames AE would stop responding.