[SDL-Regression] Controls

Although this is a known regression, I figured I should file a proper issue, to keep it visible.

(Though I honestly don't remember anymore if this happened during the change to SDL or due to the change of the keybinding system)

On the older versions, you were able to easily fine-tune your impulse thrust via keybindings. If you left the key pressed, it would go up to 100% quickly, but if you did single presses, it increases/decreases by 10%.
Technically, this is still the case, but the sensitivity is now that high, that it got extremely hard to set a specific value, a single press easily counts as 3 or more. If I try to touch the key as short as possible, I sometimes get the 10% increment, but it is far from reliable.

So I think the threshold time of when a held down button counts as multiple presses, should be vastly increased.
If I have to guess, there is currently no such threshold and the binding is triggered every frame (a test with heavier scenarios, where it is way easier to do single steps, confirmed that suspicion)

The issue does not name a file, test, or entry point; begin by reproducing the SDL control behavior and locating the keybinding and held-button handling. Done means single presses reliably change impulse thrust by 10% while holding a key continues to increase it toward 100%.