Weird Mask Premire Pro 2020

[Gabriel5C1F]

Hello! Today i change my project settings and put the option "Mercury Playback Engine GPU Acceleration (CUDA)". 

But when i use the mask, he act a little weird..she's out of the mark. 

Can anyone help me? 

I don't know if the problem is my video card, i have a GeForce GTX 1050 (3GB).

[Michael Grenadier]

does the problem go away if you reset to software only?  What version of premiere are you using?  The latest couple of versions of premiere gave me a message that the graphics card drivers need to be updated.

When I did that, the message went away.   Do some googling on how to check to see if your drivers are up to date.

[Gabriel5C1F]

No, the problem don't go away...I'm using the latest version, Premiere 2020. As i'm seeing, my Nvidia's drives are updated.

[Ivo Cimmino]

I have the same problem. I had the crazy idea to update Ppro just before delivering a project, and now I am stuck with solving this problem while the client is waiting.
I am working on a iMac with a Radeon Pro Vega 48 8 GB card.

[Andy 1968]

Premiere Pro tends to have bugs with masks and mattes.

https://youtu.be/b-vJL8b6cOM

[Gabriel5C1F · Accepted solution]

Resolved! Everything i do was downgrade the Premire's version. I was in 14.4 and i go back to 14.3.2 version and the problem was gone! Thanks to the Adobe suport!

[Ivo Cimmino]

I did the same thing, and it worked for me as well. But I wouldn't say this is resolved, as the bug is still there if we upgrade to 14.4. Hopefully there will be a fix in the next upgrade.