I honestly don’t know, I like to avoid Blueprints and never tried. You’d need a node to read / write INI files. I’m not aware of console commands or libraries handling this. My initial thought was that there would be a function library for RHI handling this but I ended up writing to ini files. Some settings are blueprint accessable through the GameUserSettings library, it’s worth looking for an existing library on the web before implementing it yourself. There are a ton of different classes handling different settings, nothing seems centralized.