Just finished some testing the new driver, using the NVIDIA pendulum Demo, and also SoTTR Trial Benchmark Demo (I don't own the game). FYI, my current monitor is the LG Ultra-wide 34UM69G (DP1.2, 75Hz refresh, Freesync range 40 to 75Hz), and is NOT on the "validated" list of G-Sync Compatible monitors.
In the NV Pendulum demo, you can run 60, 50 and 40 FPS tests, or pick a number using the sliders. Ran smoothly with no evidence of tearing, stuttering, or flickering that I could see.
In the SoTTR Benchmark, I manually cranked every setting up to max, to ensure that the test was constantly dipping below 75FPS (default refresh). It went as low as the high 50s a couple of times, and mostly was fluctuating all over the 60s and 70s.
I ran the benchmark multiple times, and all I have to say is HOLY SHIT. Absolutely as smooth as silk, without the slightest hint of a glitch or pause the entire time.
I can't believe just how good that was. It looked flawless, and I can finally see what all the fuss is about with VRR. Thank you NVidia, and also fuck you for taking so bloody long!