Vsync X Adaptive Vsync

Using vsync (smooth) (your recommendation) with nvidia, pre rendered frames 1, have to look very hard to discern delay.
120hz at 5982X1080, solid 120fps, can drop to 110 on a couple of corners first lap 33AI.
I tried adaptive when first configuring GSCE, but felt it was an odd effect.
Still on the case to reduce stutters un synced, locking max frames does not fix unfortunately.