My monitor is just "G-SYNC’ (the middle one).
When turning on g-sync I get some minor flickering on occasion (probably when FPS dips below a certain threshold and g-sync stops working). When also turning on v-sync (fast in nvidia CP) with g-sync, it makes absolutely no difference. So I’ll just turn off v-sync and save a few FPS.
I guess I have to live with the occasional flicker and sometimes choppy menu. The most annoying thing is that the cursor is tied to the monitor refresh rate when g-sync is enabled, so it feels a little choppy.