Captain Funsponge

Name: HELLDIVERS 2
Website: https://store.steampowered.com/app/553850/HELLDIVERS_2/
Status: in development
Release date: Feb 8, 2024
Availability: $39.99

Name: HELLDIVERS 2
Website: https://store.steampowered.com/app/553850/HELLDIVERS_2/
Status: release
Release date: Feb 8, 2024
Availability: purchase ($39.99)

Your settings for Destiny 2 indicates that you have set the FOV to 76.366893 (this is a multiplier, true vertical FOV is 45.42), while you have it set to 90 in Extraction which is almost twice as high.
With these settings a 2x scope in Extraction will have the same FOV as your hipfire in Destiny 2, which is not ideal. You should whenever possible match the actual FOV for hipfire, which makes the calculation more sensible: https://www.mouse-sensitivity.com/?share=2e2438bfa7d4a1a39a04f9ea08f455b7

Name: The Anacrusis
Website: https://store.steampowered.com/app/1120480/The_Anacrusis/
Status: early access
Release date: 14 Jan, 2022
Availability: purchase

Name: Hardspace: Shipbreaker
Website: https://hardspace-shipbreaker.com/
Status: Early Access
Release date: Jun 16, 2020
Availability: Purchase

Name: Control
Website: https://www.epicgames.com/store/en-US/product/control/home
Status: Release
Release date: August 27, 2019
Availability: Purchase
The game has a slider from 0 to 100. I can't seem to find a config file, at least one that is in plain-text.
For what it's worth, 10/100 seems to be just a tad too slow to match my 1.56 800 dpi 1920x1080 106.56 fov CSGO setting.
10/100 gives me 15cm/180
9/10 gives me 17 cm/180 and I'm aiming for 16cm/180 lol.

There's also FOV support now, would be wonderful if you could take a look.

By increasing "GstInput.MouseAimSensitivity" and "GstInput.MouseZoomSensitivity".
Example;
GstInput.MouseSensitivity 1
GstInput.MouseAimSensitivity 19
GstInput.MouseZoomSensitivity 19
GstInput.DylanOption_MouseFlightSensitivity 19
GstInput.DylanOption_MouseSwimSensitivity 19
With 800DPI, I have no issues in First Person, Third Person, while swimming and while flying.