Hi! Yeah I see what you mean. Yes framerate is coupled to game speed, it's not like in most other games where the framerate is just an indication of how pretty the graphics are, it also means how many ticks of the simulation are done every second (excluding things like timelapse).
What I could do is to add a slower slow motion mode to let you play the game more peacefully :) Other than this, try pausing the game a lot, it helps :)