Techspot has performed testing on FreeSync monitors and NVIDIA GPUs to determine how well do they work together. They were extremely skeptical of NVIDIA claims that FreeSync monitors exhibit issues with AMD video cards. They knew that cheap brand monitors had quality control issues, but otherwise everything worked fine on the AMD side. So their expectations were that everything should work with NVIDIA GTX 10 series GPUs and newer also. After explaining the 4 tiers of adaptive sync support that NVIDIA has, Techspot ended up testing 7 different monitors that didn't have NVIDIA certification. All worked except for one monitor that required FreeSync over HDMI. NVIDIA currently doesn't support FreeSync over HDMI as it has tied its G-SYNC technology to Displayport only. Owners of high end FreeSync televisions are left out in the cold for now as most TVs only have HDMI connections. Everything worked perfectly fine and without issues just as they predicted. NVIDIA even supports low framerate compensation (LFC) and HDR with adaptive sync support on FreeSync monitors. They haven't tested the exclusive FreeSync 2 AMD features on NVIDIA GPUs, but they expect the basic FreeSync and HDR on those to work just fine also. If you're wondering about input lag, we measured no appreciable difference to input lag between adaptive sync enabled and disabled on Nvidia GPUs. Enabling adaptive sync does not appear to increase GPU-side processing time, which is also the case for AMD GPUs. Bottom line, Nvidia supporting FreeSync is nothing but a good thing for the industry and consumers in general. When shopping for a new gaming monitor, you'll just have to make sure it's a solid high quality display first, worry about variable refresh rate technology second.