Render glitches exposing mask outlines and digital artifacts from Keylight

[TORM3NTO]

Hi everyone,

Everytime I try to render out, I get weird digital artifacts. I have already tried deleting Ae, CC Cleaned it, moved to a previous version, imported into a new project, purged memory and every other possible thing. The project is tied to a Premiere Pro clip which views it correctly but I need to export it so that I can speed up my editing instead of having a live after effects clip on my timeline.

[TORM3NTO]

*The post isn't showing the description under the screenshots.

1)Rendered frame

2)Preview frame in Ae

3)I have also tried 16 and 8 bits per channel with no result.

[TORM3NTO]

*Exporting in EXR (with Alpha Channel) will export without those glitches but I can't see the alpha in Premiere Pro.