First contentful paint late for the party

Comparing example content such as
http://staging:3000/wrc/@lordbutterfly/wrc-croatia-2023-recap-hive-rally-car-video
with production counterpart:
https://hive.blog/wrc/@lordbutterfly/wrc-croatia-2023-recap-hive-rally-car-video
there's a huge delay before denser present any content