PSA for anyone who's playing on Xbox and has an 8bitdo Ultimate.
go into the configuration app for the controller, chose one of your profiles that you don't need anywhere else, basically make one just for RE4,
and then go to your stick settings and on the right stick turn the inner dead zone to 0, lower the outer deadzone to ~85, and on the bottom tick the turn off deadzones box.
with these settings the reaction curve will be squished inward and will feel a lot more reactive to smaller stick inputs.
in-game I would turn the sensitivity to a medium level for aimimg, and the acceleration for aiming also near the middle.
because the outer deadzone will be larger, your acceleration will kick on faster and the outer 15% circle of the stick will simply be full speed
this is a way to make the Xbox version feel A LOT better to play, at least for me.
sadly people without an 8bitdo are out of luck I guess. maybe other third party controllers that have configuration apps have similar settings to change the outer deadzone... I know the Razer Wolverine V2 black doesn't sadly.