I hear you, yeah.
If nothing else, I should probably have given the first level more time. One playtester actually commented that the game was way too easy (on a previous version with different times/goals), which surprised me, but that's why the goals are what they are now.
(Slowing the actual movement down is not possible with the method I'm currently using.)
But... this is why I hope people go to the custom level settings. Level 1-4 are just examples really. Making a level that works for you and your setup should be much more enjoyable.