such as insane's 00:17:037 , 00:17:597,00:27:317 and other.The reaction time between slider and slider is too short to click and sapce between it makes the problem get bigger. It seems this style has been widely used over the map(hard and insane).New mappers are more likely to have this problem.But it can be solved by overlapping the end of the last slider and the start of the next slider or just shorten the time that each silder takes.