Cleaned the sensor of 2C. Kept them both in the same room, and 3 showed 250 which came to 56 within 5 minutes. But 2C continues to run crazy. For a second it comes to orange and then again goes back to red right away.
It does come back to yellow and eventually green, but it seems to take quite longer and it's kinda hypersensitive compared to 3. I don't know if this is by design or if it's faulty.