FPS capped at 97 despite being set to 100

Really weird. I'm only getting it in certain games. Most of them running on the unreal engine. No custom configs in game files, reinstalled RTSS.

 

DO you have the Nvidia Low Latency switched on?

 

How does this affect FPS? I have mine on ultra and see my proper framerate, but I don't know much about ultra low latency mode pros/cons other than people say it's good and I notice a bit of a difference.

 

Using null with vsync/gsync caps under the max refresh rate for lowest latency 100hz caps at 97fps 144hz caps at 138fps etc


Also if the game in question was cpu intensive, AC Odyssey for example having null on ultra would give lower fps if the cpu is already at full usage,