@nazokiyoubinbou@urusai.social Yeah but it's an easy thing to miss: 1. We want to measure how fast the CPU is, so lets write a loop to see how many milliseconds this long operation takes 2. Lets now divide some constant value by the number of milliseconds to get a calibration value that we can use to keep the game running at a constant speed 3. Division by 0?? How did that happen? (the loop was so fast that it ran in less than 1 ms)