Here's some proper content regarding a Resident Evil 6 FOV (Field of View) mod:
If you aren't ready to mod your game, make sure you have maxed out the official camera settings added in previous patches: RESIDENT EVIL 6 | Official Web Manual - CAPCOM resident evil 6 fov mod
One concern players have is performance. Does widening the view demand more from your GPU? Technically, yes. Rendering a wider angle means the GPU has to draw more objects on the screen at once (enemies, shadows, debris). However, because Resident Evil 6 is a decade old and runs on the MT Framework engine (the same as Devil May Cry 4), this is negligible. Here's some proper content regarding a Resident Evil