So, retime your run and provide some video evidence next time. Problem solved.

Is it a Elgato?

Do you just mute the entire livefeed's audio for said mission or turn the in game volume all the way down? Because copyright is strict with Phil Collins songs.

This thing seems to happen in every community.

There is a way. Look at some recent videos on YouTube and there will be some. Hope that answers your questions

If you have an upgraded SSD for a PS4 Pro then you can probably save a lot of time with the loading screens.