Hi,
No issues with GSYNC in itself it's VRR flicker that currently exhibits itself on OLED monitors, so would be seen on FreeSync as well as GSYNC monitors and only under certain conditions which you may or may not notice depending on if those conditions are met.
The DWF model seems to fair better whilst the DW version at 175Hz has VRR flicker more obvious. I run my DW at 144Hz 10-bit anyway so this is les sof an issue but some games on the menu screen if it's dark grey for example may have some flicker - Just the way it is with current tech.
The benefits of VRR (Freesync or GSYNC) outweigh some VRR flicker in some games under certain conditions. You get much smoother motion panning in games, better mouse to screen latency etc.
It's not a 4K monitor no, but as you now have a higher end Nvidia card, you can simply render games at 4K ultrawide using DLDSR in the NV control panel or NV App whichever you use:
So 5160x2160 and use DLSS Performance to apply upscaling and AA whilst retaining good framerates. The image will typically be sharper and cleaner but this all boils down to the individual game. In many games it's often better to just play at native 3440x1440 and use DLAA or DLSS Quality for the most optimum visuals and framerates.
If I was buying again then the DWF is the one I'd go for and still keep GSYNC enabled (GSYNC and Freesync work the same way so you don't need a GSYNC monitor to enable GSYNC as they're the same adaptive sync standard).
