I recently got a GSync monitor and it's great, but Watch_Dogs apparently cannot reveal the refresh rate I want to run at.

In this guide I found out how to manually set the refresh rate, as well as resolution and other configurable variables, and give advice on where to set your frame limit.

Tell Watch_Dogs that you want to manually bump the refresh rate. First I'll tell you how to do it, and then I'll share some advice that's out there to get the best out of your machine.

Use a file explorer (Win+E for Windows Explorer) to navigate to
Another way of doing the same is to simply navigate to My Documents, then go into My Games, then Watch_Dogs, then open the folder that's just a string of character.

From there you should have a folder with only one file in it called
Right click it and select "Edit"

In your given editor, search (Ctrl+F) for the phrase By default it should be "60", set it to your chosen refresh rate and save the file.

https://gaming.stackexchange.com/questions/173407/unsupported-resolution-of-watch-dogs

I have a 144Hz screen that overclocks to 165Hz. I set 141 or 162 respectively for my Watch_Dogs refresh rate based on information about G-Sync overdrive I found here https://gaming.stackexchange.com/questions/173407/unsupported-resolution-of-watch-dogs