PYNQ-Z2 cannot output 1080p?

Hello everyone,
I am having an issue with a PYNQ-Z2 outputting 1080p video at 60Hz.
I can only get stability at 720. I also have a Zybo Z7-20 and the Zybo outputs 1080p without problem.

There is any workaround to solve this issue?

Thank you.