OK <_resident geek
Variable Sync Vertical Refresh is a technology that allows the monitor and GPU to synchronize the refresh rate to avoid weird artifacts like tearing and shuddering. Generally this is important for when the GPU is overloaded and is operating below the native refresh of the monitor but its also important at very high refresh rates.
AMD's implementation is called Free Sync. As this solution is software only and free, its alot cheaper.
NVidia's implementation is called G-Sync. This solution requires hardware that is supplied only by NVidia, as such is more costly.
At the moment they are not compatible. But - maybe in the future, NVidia cards will also support Free Sync (as this is a public domain solution, free to everyone.) I have seen articles where people say they have seen it work, but its not in the wild yet as far as I know.
As you have a NVidia GTX 1080 ti, which supports G-Sync, you would need a monitor that supports G-Sync for this feature to work. In theory the latest monitors will self detect and set that up for you. In theory. I would need the exact model of the LG to confirm.
However - this will not be the cause of blurriness.
Now as for it being blurry. First I assume other games are clear and the graphics are what you expect. With that...
How big is your monitor? 1080P on a 32" monitor is blurry - you can't fix that.
Have you tired just turning off HDR on both the monitor and the game. IMO HDR gaming is not quite here yet.
Do you have the latest drivers? Google "NVidia Drivers" and check, they change all the time. Sometimes several times a week.
The depth of field should allow for sharper images farther away. Is that working? Or is the whole screen blurry - can you share a screenshot?
I find TD2 imaging kinda soft at medium settings, but not what I would call blurry. I assume with a GTX 1080 ti you are set to high.
Assuming Windows 10, when you right-click on the screen wallpaper and look at screen settings, is it what you expect? 4K (3840x2160)? If so, does that setting in game for resolution match (or close, as I run windowed full screen and its a little off)?
Anyway, let us know how you fixed it, and what you have tried.
...gene