Like most of the other best Samsung TVs, the new 98-inch QN900C has Samsung’s Gaming Hub and Motion Xcelerator Pro. That delivers 4K at up to 120Hz, rising to 144Hz with compatible PCs. There’s also support for AMD FreeSync Premium Pro as well as NVIDIA G-Sync like most of the best gaming TVs have.
I’m less excited about resolution now than I am about something like microLED that would greatly improve response times and color reproduction. There’s isn’t much in the way of 8k content anyway and good luck playing games at that resolution with a decent framerate. It’s my understanding that the larger size would be better for microLED too, since the components wouldn’t be packed in too tight a space.