Post
Inputs that must happen on exactly the right 1/60th of a second. No earlier, no later.
Most games run at 30 or 60 frames per second, and some tricks require pressing a button on one exact frame. That's a window of roughly 16 to 33 milliseconds. Frame-perfect tricks separate good runners from great ones, because consistency over a full run is brutal. Some tricks are 'two-frame' or 'three-frame' windows, which sounds more lenient until you realize you need to hit dozens of them in a row without choking. Human runners practice these inputs thousands of times to build muscle memory that borders on superhuman.
Example
In Celeste, 'demodashing' requires pressing dash and crouch within a 1-frame window to squeeze through gaps that would normally be impassable. Top speedrunners hit these consistently across dozens of rooms in a single run.
Why it matters
Frame-perfect tricks define the skill ceiling of speedruns and create the heart-pounding moments that make speedrun marathons like GDQ so thrilling to watch. They also push the conversation about human limits versus tool-assisted perfection.
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