If if there was, would it matter? 144Hz monitors draw a frame every 7ms. What does it mean to have sub-frame latency? Human reaction time is about 250ms. So from the time you see something and ate able to react, over 30 frames have rendered.
As someone who used to play fighting games competitively I know that it makes a huge difference if it's sub 1 frame input lag or not. It's the difference of being able to execute certain combos with 1 frame links (basically the time between inputs) 100% of times instead of <50% of the time.
