Comparing the results running on the Teensy 4.1 vs the Teensy 3.6, the Teensy 3.6 is able to crack the PIN 100% of the time whereas the Teensy 4.1 only cracks it about 75% of the time. Lowering the CPU frequency to that of the Teensy 3.6 results in cracking the PIN 100% of the time.
Comparing the results running on the Teensy 4.1 vs the Teensy 3.6, the Teensy 3.6 is able to crack the PIN 100% of the time whereas the Teensy 4.1 only cracks it about 75% of the time. Lowering the CPU frequency to that of the Teensy 3.6 results in cracking the PIN 100% of the time.