re: move speed - it's also often that low rated players using engines take too long on trivial moves - many chess engines will take a set amount of time to look

re: move speed - it's also often that low rated players using engines take too long on trivial moves - many chess engines will take a set amount of time to look for the best move, even if there's something completely obvious on the board like capturing a queen that you've spent the last three moves trapping.