“[…] but in general, ARR is auto repeat rate (how quickly the pieces move from right to left.) And DAS is delayed auto shift (How long you have to hold down the button to before a piece starts flying to the wall). Changing them can change how "slippery" your pieces feel and can also enable you to play a lot faster. […]”
https://www.reddit.com/r/Tetris/comments/13uqby/whats_das_an...
“[…] but in general, ARR is auto repeat rate (how quickly the pieces move from right to left.) And DAS is delayed auto shift (How long you have to hold down the button to before a piece starts flying to the wall). Changing them can change how "slippery" your pieces feel and can also enable you to play a lot faster. […]”