So i can add something now that i’ve gotten a new external G-SYNC monitor.*
Using an Acer XB271HU (absolutely incredible screen btw) as my primary G-SYNC monitor I now have both Instant Replay and GSYNC working together.
Seems like the built in laptop screen has some limitations concerning G-SYNC.
Also, I used to see graphical glitches in games when using G-SYNC (rainbow like effects when looking in the sky and other textures) on the internal monitor that no longer appear with the external Acer.*