Render problems

Hi guys. I tried to make my first cinematic in 4k, but there were problems. When rendering in exr, stripes appear in the sky area. If I render in apple prores 422, the video becomes of poorer quality, not 4k. What can I do to keep the video 4k and without streaks in the sky? Attached a link to the screenshot.

https://drive.google.com/drive/folders/1CK9pbv8HCeMBhHyj5SxD4qGKBxlpQuNk?usp=sharing