@thomasfuchs The Kaypro II was the first computer I ever overclocked ... turns out that a 2MHz z80 isn't enough to keep up with a 130wpm keyboarder (not me 😂) ... though the code in Wordstar coped pretty well. It would stop updating the screen and just print ! characters and keep buffering the input. Then she'd stop typing and it would take a good 60 seconds to unload the input buffer and get back to normal. Same person regularly wore out 80's mechanical keyboards, which takes some doing.