Drones in swarm drifting

1

Hi how do i get more stable flight with a swarm and how far should drones in swarm be?
So the room i am in is a small 4x4 meters in size and I am flying 4 tellos. How can I get these tellos to be more stable.
Some guess as to what could be influencing the drift is

  1. uniform floor, I could put a textured carpet.
  2. Brighter lighting. My room lights are already quite decent
  3. I heard people say that I should remove prop guards, but I am a bit hesitant
  4. Maybe the gust of wind from each tello is influencing each other. What spacing would be recommended?
2

I’ve run tests in an area smaller in size with good results. Can you clarify “stable” is it that they aren’t maintaining position very well while in a swarm configuration? What happens if you run a test with two Tello drones instead of four in swarm?

3

You can check from these videos Ritesh Kanjee on LinkedIn: #drones #drone #dji

And

You can see the drift more in the second video.