Moving the map in the direction of movement
If you fix the GPS position in the centre of the map and use the option that the map moves in the direction that you are moving, you might have problems if the way is very twisty.
I had my mobile phone fixed at the handle bar of my mountain bike and motorbike and rode very twisty mountain paths.
Locus maps moved the map always right left right or clockwise so that I had to stop and wait for the programm to get organized again. You can simulate it by holding the mobile in your hand and moving it.
It would be an idea to have a damping function / option so that the map moves very slowly.
It would be much better than to use the app while riding.