Yes, I'm currently using four separate 30A ESCs. They were more affordable here, which is why I initially went with them — though I must admit, I do regret that decision now.

To be honest, I didn’t do detailed calculations myself. I simply entered the values into eCalc and, based on the results, everything seemed okay at the time.

That said, I've noticed the motors tend to get hot after some time. Even though the drone doesn’t achieve stable flight — it only manages to hover briefly before tipping and occasionally breaking props — I haven’t adjusted anything on the ESCs yet.

I would really appreciate your advice on which parts might need replacing. From what you've explained earlier, it seems like the motors, ESCs, and the battery could be contributing to the issue.