Is there no way to activate the mode in my current save file?

I have noticed at times, I step the game speed up and the number increases but the game does not actually speed up. Is this a game limitation (memory or something limiting max speed)? I have graphics set to max performance. Map is 8.5 x 8.5 so, not a huge …

I can change speed below 5 using +/- but when the speed become 5,i cant change to a higher one

How about making speed changes 1-2-4-8-16 instead of 1-2-3-4.. e.t.c. ?

``` In my case, I can't or don't know how to change the speed, and it would be nice if everyone could customize the controls to their liking. ```