I like how time taken to pass Insanes can get completely derailed into something like mouse. The bottomline for mouse users is, turn off whatever pointer prediction your system has for the mouse (not acceleration).
Now, back to topic.
I've answered my part, so here's a tip. If you want to pass Insanes in the shortest amount of time possible, spent as much time possible on as many harder-than-your-current-skill-level maps as possible while taking that time to experiment on different playstyles and gaming philosophies. Once you get that drilled and secured in your head you should be in good stead to pass Insanes just for the fun of it.
Now, back to topic.
I've answered my part, so here's a tip. If you want to pass Insanes in the shortest amount of time possible, spent as much time possible on as many harder-than-your-current-skill-level maps as possible while taking that time to experiment on different playstyles and gaming philosophies. Once you get that drilled and secured in your head you should be in good stead to pass Insanes just for the fun of it.