If there's little to no lag and they've sufficiently practiced them (meaning on and on for hours on end) it should be a good 95% of the time if you're good.
Now, the game is new and most people online just are bad period but you will indeed see some like that Valentine you mention which will pull off their combos consistently, it's one of the easiest parts of the game as it only requires a lot of execution and no mind-reading skills or reaction times of a sixth of a second so it's like the most beneficial work/reward ratio.
Now, the game is new and most people online just are bad period but you will indeed see some like that Valentine you mention which will pull off their combos consistently, it's one of the easiest parts of the game as it only requires a lot of execution and no mind-reading skills or reaction times of a sixth of a second so it's like the most beneficial work/reward ratio.