My tetrio 40line personal best is 1:17. I wonder if that's a good time for someone who only turns pieces in one direction meaning I often turn pieces 3 times in one direction instead of one time in the other direction. Getting used to both counter clockwise and clock wise would improve my time by a lot but its too hard to train myself to play in a new way. Also I never turn pieces 180 degrees and I often swap pieces when I dont really need to.