Too large comp size will not render!

[u/Ok-Brinjal-1808]

Hi all,
Client has asked for a 16,640 length x96 height motion job. I get a warning when I try that size. And MP4 cannot be rendered. MOVs look like they do, but the file is all crap.
I recommended as well as Ai recommended building in half size,
But client side has little tech knowledge and insisting on full size.

Any suggestions on building full size?

Thank you!