We tend to receive native progressive sources, then grade and online as progressive in Resolve.
There's seems to be inherent issues with over sharp and extreme fine detail causing aliasing and moiree etc in an interlaced environment. This is especially true of UHD / 4K drones.
We tend to deliver interlaced masters for transmission in Avid media composer, which is far happier with I vs P compared to Resolve.
To Remove artefacts we tweak the sliders in this Boris Sapphire module.
https://borisfx.com/documentation/sapph ... eldremove/The results are unbeatable and an essential part of our daily workflow.
It does take a while to render. If I were you I'd be searching the Web using the above as a starting point.
Good luck.