: Many pre-rendered or scripted cutscenes remain locked at 16:9 with black bars on the sides.
When applying these fixes, it is often recommended to in the in-game options first, then let the external tool (like RenderTweaker) handle the expansion to your native 21:9 resolution to avoid internal engine stretching.
If you play on a 21:9 or 32:9 monitor, the game will either: