I see it, I know how to use it, but what exactly is turbo mode?

It's a way to make Scratch projects run faster.

coolhogs wrote:

It's a way to make Scratch projects run faster.

Slightly correct- What turbo mode does is that it speeds up the scripts in one of the bracket blocks, along with the delay between blocks. You see, a time between blocks and repeating a script, it lags, but lags quick enough to make it slightly inconspicuous. If you turn it on turbo mode, it runs the speed of the project blocks very quickly to make delay practically unnoticeable.

More info can be read here- http://wiki.scratch.mit.edu/wiki/Turbo_Mode#Turbo_Speed

Thank you! :3