If you’ve already used other ASI mods, you may already have a dinput8.dll or are using another ASI loader, in which case you are free to discard the bundled dinput8.dll.
By default, your input is mapped with a linear curve. However, you can add additional points to %programdata%\AnalogSense\curve_points.json
. You can use this online tool to generate this file for you — it also visualizes & simulates the response curve.
Stand is a popular mod menu for GTA V that is free to use in story mode and has its own analog keyboard support.
Once Stand is injected, you can navigate to Game > Analogue Keyboard Support and enable it.