Short description: Toggle the Rockstar Editor on for better character screenshots and videos.
Detailed description: For a long time, the Rockstar Editor wasn't usable on RageMP because it caused crashes. It's disabled by default. However, as of november last year, that's been fixed: https://rage.mp/forums/topic/6575-rage-multiplayer-10-developer-preview-1-release/ (ctrl+F rockstar editor)
So, there's a little flag that has to be enabled, which is seen here https://wiki.rage.mp/index.p