I am trying to render videos for social media 1080 x 1350 & 1080 x 1920 directly on AE as a ProRes 422 MOV file . The 1080 x 1350 renders fine but the 1080 x 1920 version renders with a green box at bottom. If I send the render through Media Encoder it renders fine but it takes extremely long to render. Please Help
Probably mundane hardware acceleration issues. AME becoming slow as hog and not using it either would further reaffirm an issue there. Check the relevant settings and update your system's graphics driver.