a question..
did you have NVidia REFLEX enabled ?.. if so, can you test with disable that ?
I assume it is the Indicator for Nvidia-Reflex, which you can enable / disable in Geforce Experiance in the Experimental settings.
See also:
( think there are also monitors which offer such a “feature” )
EDIT:
and LOL, it is in meanwhile also available within the Geforce Overlay
=> settings → Performance → Reflex… : Ensure it is DISABLED
Screenshot ( sorry, in german )
@OakDragoon14280 .. oh man,.. now I seen your post.. I should read allways all posts first 
.. again a bug report , where the bug was not the game