Here is Atlas Fallen: Reign of Sand's latest patch. Make sure you read the entire note!
PERFORMANCE
Added an experimental option to fix the stutters that players with uncapped FPS suffered when playing with high frequency monitors (requires more powerful PCs and changes to settings.json file).
This allows you to manually set the rate at which all game systems are updated (including camera movement, which was the main culprit for the stuttery feeling encountered at high framerate).
How to enable the fix:
Download the file available on Focus Together here
Replace your settings file with the pre-made one you just downloaded, it will activate the fix, but it will reset all the rest of your options to defaults.
Formatting tips:
Make sure to respect the formatting of the json file (spaces, tabulations ...etc.).
If you add the line in the middle of the text block, don't forget the comma at the end of it. It will not work without it.
If the line that you add is the last line, it doesn't need a comma at the end.