At CES 2019, Nvidia announced that Nvidia's drivers would, as of next week, partially work with monitors that have the VESA Adaptive Sync protocol over DisplayPort.
In other words: Nvidia owners won't necessarily need to pair their GPU with a G-Sync capable monitor anymore. Nvidia announced a range of "G-Sync Compatible" monitors, a small range of displays that met Nvidia's standards and would automatically support variable refresh rate for GTX 10 and RTX 20 series cards with Nvidia's first driver release for 2019. Meaning some FreeSync monitors will conform to Nvidia's G-Sync.
We won't know much about the results till the 15th of January when the update releases and bench-marking will be performed. So if you aren't sure, wait till then and do your own research on what is right for you (if you're in the market).
At this price, it's currently $100 off retail for a saving of approximately 12.5%. I bit the bullet last night and bought one because it was perfect for what I needed.
IMO TN Monitor is not suit for gaming…