I was working a 2 cube strat for 1-4 using a controlled teleport, and a (sort of) new glitch I am calling fast placement, which resulted in a 40.22 second run.

Fast placement is when you place a block on the first frame possible, which causes the block to physically be wherever you could last place a block (white cube outline), while logically connected to whatever you clicked on. I originally thought this was related to the cube placement glitch (when I made the 1-2 run), but it is caused by placing a block at any time, not just immediately after picking one up. This is also the cause of blocks not placing themselves where you are looking.

However while I was trying to improve the 40.22 I got a really random speed boost while doing the controlled teleport. Have not figured out how to make such speed boosts consistent, but it is probably caused by placing the teleport block on the frame that the teleport happens, or something like that.