OK my bad I found out that my keyboard is working in a unusual way.
When I keep pressed on key, it behaves like I'm repeating the press over and over. Only the last key pressed have this behavior.
Once I press another key, the previous one behave properly, e.g. like I'm keeping it pressed.

I'm ...

Yes I'm using French keyboard layout, my bad I should have mentioned it. ZQSD are standard movement key.

- What did you do?
- I tried to run

- What happened?
- the model have a weird behaviour when I keep a movement key pressed (Z,Q,S,D) for running. It's like it is stopping for a few milliseconds between movements. The movement can be seen in attached GIF factorio_running_bug.gif . The movement ...