DAAT

Anyone can find a way to solve the mouse smoothing? (Maybe it can be changed in a config like Metro Exodus?) It is quite annoying.

Quite a bit of smoothing yes, but in first person it shouldn't affect your actual sensitivity (i.e. the 360 distance will be correct), but it will make it feel sluggish.
In third person there's both smoothing and acceleration...

Will modify the "max_value" over 100 bring any changes? 
{ "name": "FieldOfView", "type": "float", "value": 106.260205, "default_value": 80.0, "min_value": 70.0, "max_value": 120.0, "step_value": 5.0 } Will modify the file in install directory bring any changes? 
<Game Directory>\r6\config\settings\platform\pc\options.json
{ "name": "FieldOfView", "display_name": "UI-Settings-Video-Basic-FieldOfView", "description": "", "order": 2, "is_visible": true, "in_pre_game": true, "in_game": true, "update_policy": "immediately", "can_be_restored_to_default": true, "type": "float", "value": 80.0, "default_value": 80.0, "min_value": 70.0, "max_value": 100.0, "step_value": 5.0 }  

Not from what I've tested. Tried with both FOV, sensitivity and zoom sensitivity, going beyond the in-game limit just resets the value.

if your fov doesn't match this will help although it costs you some of your screen being black 

All new aims added for config file and in-game now!
Let me know if you spot anything weird

I'm almost done, 20-30 minutes left I think.

They changed a lot, but I got everything figured out now. Just need to check all the scopes to be sure then I'll release it

Working as fast as I can